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SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)

 SAE 10W-30 Signature Series 100% Synthetic Motor Oil (ATM)
Product Code: ATM • Brand: AMSOIL

The Top Tier of AMSOIL Synthetic Motor Oil. AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world's best motor oil. The result: engine protection that blows the doors off the highest industry standards.

• 50% more cleaning power vs. AMSOIL OE Motor Oil
• Ideal for turbos & direct injection
• Guaranteed protection for up to 25,000 miles or 1 year

Package sizes include:

Quart Bottle
Gallon Bottle
30-Gallon Drum
55-Gallon Drum

See Pricing or Place an Order
MSDSData SheetFrench Data Sheet

Product Details

Product Applications

AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled vehicles. It is recommended for all domestic and foreign vehicles requiring any of the listed performance specifications:

Product Application Specs

• API SN (Resource Conserving), SM
• ILSAC GF-5, GF-4
• ACEA A5/B5, A1/B1
• GM LL-A-025, 6094M, 4718M
• Ford WSS-M2C205-A
• Chrysler MS-6395

Product Description

AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It withstands the stress of higher horsepower, higher heat and complicated emissions control systems. Signature Series Synthetic Motor Oil is engineered to outperform competitive conventional and synthetic motor oils. It delivers long-lasting performance and protection.

AMSOIL, the leader in automotive synthetic lubrication, produced the World's first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Protects Against Engine Wear

AMSOIL Signature Series Synthetic Motor Oil develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the industry-standard API SN specification, simulates extended periods of stop-and-go driving.

For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm - conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined. We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75 percent more engine protection against horsepower loss and wear* than required by the industry standard, extending the life of vital components like pistons and cams.

Cam Lobes Wear Test - AMSOIL SS reduces cam wear
sequence IVA engine test results
*Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.

Protects Pistons from Low-Speed Pre-Ignition (LSPI)

We armed Signature Series with an advanced detergent system that protects against harmful deposits and low-speed pre-ignition (LSPI). Most new engines feature gasoline direct injection (GDI), often combined with a turbocharger to boost power and improve fuel economy. These new technologies, when combined with a poorly formulated motor oil, promote LSPI and threaten engine operation. LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. It occurs in today's advanced engines and is much more destructive than typical pre-ignition.

Original equipment manufacturers (OEMs) like GM* have addressed the issue by designing tests to determine a motor oil's ability to prevent LSPI. The GM test allows up to five LSPI events to receive a passing score. Signature Series Synthetic Motor Oil provided 100 percent protection against LSPI* - zero occurrences were recorded.

LSPI piston damage when competitors motor oil is used

Protects Turbochargers

Our unique synthetic formulation is inherently stable to resist oxidation and neutralize acids. Signature Series Motor Oil provides outstanding protection against deposits common to high-temperature engine environments. The tremendous heat and stress turbos create can cause some oils to break down and form harmful bearing deposits through a process known as turbo coking. Over time, turbos can suffer reduced performance or fail altogether.

We challenged Signature Series to the GM Turbo Coking Test, which consists of 2000 cycles of extreme heat soaks. An oil must limit the temperature change within the turbocharger to 13 percent or less to pass the test. Signature Series limited the temperature increase to only 3.6 percent, protecting the turbocharger 72 percent better than required* by the GM dexos1® Gen 2 specification.

amsoil turbo bearing shaft protection

Extends Drains: Protection Guaranteed

AMSOIL Signature Series 25,000 miles drain interval technologyAMSOIL Signature Series Synthetic Motor Oil provides reserve protection, allowing you to go longer between oil changes if you choose up to 25,000 miles, 700 hours of operation or one year, whichever comes first*. Our unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals - guaranteed. It provides peace of mind so you can fit oil changes into your schedule.

Oil Filter:

Any brand of oil filter may be used with Signature Series Synthetic Motor Oil. For maximum convenience, however, use an AMSOIL Ea® Oil Filter. Made of fully synthetic media with greater filtering efficiency and dirt-holding capacity than conventional filters, Ea Oil Filters are recommended for 25,000 miles/12 months or 15,000 miles/12 months, depending on application, which coincides with Signature Series' once-a-year drain interval. While Signature Series' 12-month service life remains intact if a non-Ea Oil Filter is used, the filter must be changed according to its manufacturer's recommendations.

Trusted by Professional Engine Builders

Engine Masters ChallengeDedicated engine builders and mechanics put in long hours honing their craft. These architects of powerful, high-performance engines turn to Signature Series to protect their passion.

"When we use AMSOIL, I don't worry about a film breakdown or an oil breakdown - and the oil pressure is always consistent. We've tested oils back-to-back on the dyno in our shop and we're always able to make more power with AMSOIL."

-Brett Bowers, Engine Masters Competitor and Professional Engine Builder

Maximum Cleaning Power to Battle Sludge

AMSOIL Signature Series offers Maximum Cleaning Power to Battle SludgeAMSOIL Signature Series Synthetic Motor Oil has 50 percent more detergents* to help keep oil passages clean and promote oil circulation.

Engine failures due to sludge are often caused by a plugged oil pick-up tube screen - the motor is effectively starved of oil. The Sequence VG Engine Test measures an oil's ability to prevent sludge. During the test, a Ford 4.6L engine is subjected to sludge-inducing conditions for 216 hours. The industry standard allows for 10 percent blockage before the motor oil fails the test. Signature Series produced a screen virtually free from sludge (see image). Its detergent and dispersant additives are so effective, Signature Series provides 90 percent better protection against sludge.

• *Based on independent testing of AMSOIL Signature Series 5w-30 motor oil, in the LSPI engine test as required for the GM dexos 1® Gen 2 specification.
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
• *vs. AMSOIL OE Motor Oil
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.
* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

Preserves Horsepower

The extreme durability of Signature Series Motor Oil ensures your engine runs stronger, for longer. We installed Signature Series 5W-30 Synthetic Motor Oil in a Ford* F-150 with a new 3.5L Ecoboost engine to test its ability to protect turbocharged direct-injection (TDGI) engines from torque and horsepower loss during extended drain intervals up to 25,000 miles. Power sweeps were done at the beginning and end of the test to evaluate horsepower and torque retention. As the graph shows, Signature Series helped maintain engine performance throughout the 100,000 mile test.

horsepower degradation test results

Limits Oil Consumption

Signature Series has a uniform molecular structure that limits evaporation and keeps it where it's needed most - protecting your engine. Volatility (burn-off) occurs when oil gets hot, causing lighter molecules to burn off or evaporate. This leads to oil thickening, additive imbalance, higher emissions and oil consumption. The NOACK Volatility test is the industry standard for evaluating motor oil high temperature evaporation. It measures the percentage of burn-off after a motor oil is placed under constant airflow at 482°F for 1 hour. A lower number indicates a better resistance to evaporation. Signature Series falls far below the API limit for volatility, reducing the need for frequent oil top-offs and limiting vehicle emissions.

noack volatility test results

Easier Cold-Starts

Signature Series Synthetic Motor Oil does not contain paraffins (wax) and stays fluid in temperatures of -58°F and lower. Extreme cold causes other motor oils to thicken, starving vital moving parts of lubrication, accelerating wear and even preventing vehicles from starting. Signature Series provides 66 percent better cold-temperature performance for easier starting, better fuel economy, improved oil flow (as seen below) and reduced wear.

pour point test results

Maintains Protective Viscosity

We formulated Signature Series with superior thermal durability that resists breakdown better than conventional and synthetic motor oils. The Sequence IIIH Test uses the Chrysler 3.6L Pentastar engine to evaluate a motor oil's ability to resist the damaging effects of heat. The test is conducted with oil temperatures of 304°F, 100°F hotter than normal operation, to accelerate oil thickening and deposits. Despite the extreme conditions, Signature Series kept pistons clean and held thickening to only 6 percent, a minimal amount compared to the proposed specification limit of 150 percent*. This stay-in-grade performance helps maintain maximum power and fuel economy while also ensuring advanced technologies like variable valve timing (VVT) operate as designed throughout the entire drain interval.

sequence III-H test results

• *Based on proposed ILSAC GF-5 Plus specification.
*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

SERVICE LIFE

Normal Service: Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operat-ing under severe service.

Severe Service: Up to 15,000 miles, 700 hours of operation or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles; excessive idling; or frequenttowing, hauling, plowing or driving in dusty conditions.
• Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.
• Change at the vehicle manufacturer's recommended drain interval outside U.S. and Canada.
• AMSOIL Ea® Full-Flow Oil Filters are designed for extended drain intervals. Do not exceed 12,000 miles or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change filter when changing oil.
• Check oil regularly to maintain proper fill levels.

AMSOIL Ea Full-Flow Oil Filters stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

COMPATIBILITY

AMSOIL Signature Series Synthetic Motor Oil is compatiblewith other conventional and synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil's life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL synthetic motor oils.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL ATM.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Technical Data

TYPICAL TECHNICAL PROPERTIES
Signature Series 100% Synthetic 10W-30 Motor Oil (ATM)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)10.0
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)62.3
Viscosity Index (ASTM D-2270)147
CCS Viscosity, cP @ (°C) (ASTM D-5293)4278 (-25)
Flash Point °C (°F) (ASTM D-92)230 (446)
Fire Point °C (°F) (ASTM D-92)256 (492)
Pour Point °C (°F) (ASTM D-97)-47 (-52)
NOACK Volatility, % weight loss (g/100g) (ASTM D-5800)4.1
High Temperature/High Shear Viscosity
@ 150°C, 1.0 X 106 s.-1), cP (ASTM D-5481)
3.11
Total Base Number (ASTM D-2896)12.5

Related Videos

LSPI Super Knock Prevention

Sequence IIIG Engine Test + Motor Oil Comparison

Cold Flow Pour Test AMSOIL vs Conventional Motor Oil


 SAE 10W-30 Signature Series 100% Synthetic Motor Oil (ATM)

Did this product meet your expectations?

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Product Name: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
Current Rating: 4.91out of 5 stars
Votes & Reviews: 163 vote(s) and 363 user reviews.


A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Asphalt F150: space

Only oil/filter i will ever buy

I use this oil in my 2013 F150 with the eco-boost 3.5L engine. Truck burns or uses zero oil between oil changes(once a year). I only drive about 7,000 miles a year. I use Amsoil because I know Amsoil makes the best products available.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bubba: space

Long time user

Been using AMSOIL since the 70's in many cars and trucks. Sold one truck to a mechanic after 204K miles. He said it was the cleanest engine he' ever seen.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by rrigsby24: space

If your not an Amsoil guy, your doing it wrong

Customer for 7 months. I can't say anything someone else hasn't said already. This was for my Dad's girlfriend car. We have my truck, his truck, her SUV, my mower all on amsoil. My truck is all done. Engine, tranny, rear end, transfer case. Waiting to put in coolant. It sells itself. They say everything drives.i use signature series and will never use anything else in any motor I ever own.dealerahips can say whatever they want, just stinks you have to change within a certain mileage to keep warranty cause this oil goes forever compared to rest. Use it and see!!!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sierra owner 12: space

Good oil, keeping the motor clean

I chose to go 0-40 for both cold flow and film strength at the running temps. Motor is getting cleaner every oil change and is running great. I tow with confidence and will continue to run the first in synthetics

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by TM: space

Best oil you can get!

After switching over to AMSOIL Signiture Series 5W30 in my '07 Prius, I couldn't be happier. The gas motor is running very smoothly and more efficiently since I have owned it! Not too shabby considering it has 124K+ miles on it! This oil is the real deal. If you are serious about keeping your car in the best condition for as long as possible, there isn't a better oil out there that can deliver on that than AMSOIL.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike T: space

Best oil I have found yet

Back in 2006 I have swivhed from other brands to Amsoil. Based on some independent test results, and most importantly a friend. Who have tested his 12000 mile oil being Amsoil, on 45000 mile vehicle, that used amsoil since new. Test results sugested fillowing: 1) oil is 6000-7000 mile old 2) engine is 15000-25000 miles old 3) if lubrication continues as before, engine should ladt over 300000 miles.
That was enough info for me to switch, also Mobil 1 that I was using at the time, came with less promising test results.
Since the switch I have been using Amsoil in every car, and truck I owned. Never had a failure due to lubrication. And most importantly have saved a bunch of money, on changing oil once per year. Signature series, along with EA filter can last up to 25000 miles. I would never go past 15000 miles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Duff: space

Best stuff

I have a 05 ram 2500 HD 250000 miles on it still runs like a dream

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

In year's past ....

I used this blend for years until I changed to the European blend and it worked very well ....

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mario: space

Yes

Good

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Nick/repair tech/enthusiast: space

Best oil you can buy

The highest quality oil for everything with and engine, hands down.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Big Al: space

Great stuff

I've used Amsoil over the last 30 plus years and never had a problem with any of the product. I use it in offroad vehicles, 4x4 Jeeps, turbo charged engines, NA engines and anything else that benefits from a high quality synthetic lubricant.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hubert: space

I have been using Amsoil products since 1984.

I have been using Amsoil 100% synthetic engine oils in all my cars, my wife cars since 1984.
At first it was 10w-40 AMO, then in 2002 I switched to 5w-30 ASL. I refuse to use the 5w-20 and 0w-20
oil, I feel my engine is better protected with the 5w-30. I also use the oil filters, the grease.
They are simply high quality, great products and the service is great. I order online via the Amsoil website since 2001. I get my order within a couple of days, and there is never any mistakes.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tads Subaru: space

Top quality oil

I have used Amsoil signature oil for over a 100,000 miles in my vehicle. I tried other oils but they did not last or perform up to my standards.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Racing girl: space

This is my go to for my truck

I can go a long time between oil changes with the signature series 5W 20 oil, it is amazing how much better my truck has been running since I have been using it. I haven't found a con with it yet, just all pros!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jay: space

GREAT STUFF

I have used Amsoil for many years, I use it in all my vehicles everything from my daily driver to my classic and antique cars, I even order it for my friends and family who all love how it works and the convenience of use ie. Once a year oil change.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sacco: space

I would buy this oil again

.............. .............

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larry: space

Good Product

AMSOIL Signature Series 5W-30 Motor Oil
keeps my car running smoothly.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Animal: space

Great product

This product has Pierier antiwear property is

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chuck: space

I always use Amsoil

I've been using Amsoil oil for more than 20 years so when I bought a used 2011 Toyota Highlander that requires 0W20 oil I chose Amsoil Signature. I noticed that the my SUV used less oil with Amsoil compared to whatever the dealership put in it. I've had several vehicles that even after 10,000 miles used virtually no oil when using Amsoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by None: space

I love the oil, all of it.

I have been using Amsoil for years. Commutes for me is 40 to 50 kms oneway and I can run Amsoil and never have to add oil. Had an old car overheat in Calgary one summer due to traffic on the deerfoot trail and there was no problem afterwards with the car or the oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Trevor: space

I have bought this for years!

I have used this product for years, it gives my vehicles top notch protection!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Harley Cop: space

Beats sliced bread and bottled beer

I have used Amsoil products since 2003. Never a problem. I have recommended it to friends without any qualms.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by DJM: space

Best product ever, life time customer

Ever since discovering this oil in 2005 I've never used anything else, and it's never let me down. 15k miles between oil changes and it's still gold in color not black like others.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris: space

Love this product

I use the product in my 2013 Dodge Ram 5.7L.
I believe I have increased fuel mileage and the truck runs great!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by DoubleD: space

I will never buy another oil again

I have used amsoil in my motorcycle and personal vehicles for years. All of them perform perfectly.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lando: space

I would buy this product again and again

Product works amazing! No issues

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ernie: space

I will buy all amsoil products especially oil an power foam

Love the oil never had issues power foam is the best out there if ya know how to use it correctly.. very happy with the results and products..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Andy: space

I will use this for as long as I live

Amsoil is de bessss!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Smilinjack: space

Never lets you down Never fails. Actually works as advertize

Smilinjack has been using AMSOIL 1030,1040 2Cycle oil, Power Foam, oil and air filters and Performance Improver continually since 1979. Once we tried it, have never ever needed or used anything else. Automotive use, lawnmower, lawn tractor, boat motors and my portable generator all perform well with AmsOil in the crankcase. Excellent products. Knew a good thing when we first found it and will never go to anything else. EOM

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joe: space

I use nothing but Amsoil for the last 8 years.

Great product, love the extended drain capability.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tom: space

Amsoil Signature Oil

I have been using Amsoil in every vehicle I have owned for the past 15 years. I like the extra protection and only changing oil once a year.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert: space

yes

your car runs great

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brian: space

I keep this stuff in my shop by the case.

I just had a 600 horse 460 Ford built and put in my truck and this oil is the best insurance for a hydraulic roller cam motor in my honest opinion..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Great product at any price

This product goes in all my vehicles!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Alex: space

Will buy again

Used it in my 2015 Ford Fiesta rally car. Seems to be working.
will buy again in couple months when time comes to change oil and filter!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mack: space

ONLY THE BEST WILL DO!!

Well, I am not the guy who owns a mega-truck or 5 SUV's. I have the "love of my life" who's stuck with me for 38 years and a major cardiac failure. My goal is to make sure that this investment of my life sticks around for awhile. Everyday she gets in her 2013 Honda CR-V and takes to the roads. Her rig WILL have the BEST I can afford protecting her. This is why when it comes to the products you make, they will be used. When the BEST is used there is no need for excuses!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Craig Sr.: space

Don't know where to start when talking about GREAT PRODUCTS!

I have been around cars and trucks since I was 11 years old...rebuilding, normal maintenance, restoring, and mechanical. At almost 70 I can tell you that my pride and joy is a 1998 Chrysler Town & Country LXI mini van. I proudly have 385K Amsoil miles and it still runs like new. I get exceptional mileage, no smoke from exhaust, no rough idling, no engine noise (that most older motors get), and can say after sitting in the drivers seat all those miles...I still love to drive it and see what new gets better! I am constantly surprised at how smooth a quiet the motor runs. When I take it get my tires rotated they always comment on how well it runs...here is the irony. When trying to explain about additives there is a blank look as people just don't understand that synthetic oil is engineered not manufactured. A lot of time, research dollars, and effort has gone into the making of each product. I will always explain the benefits of Amsoil when asked...just get tired of people that are ignorant to the science and technology that has made this product what it is. I have been a 20+ year user and will always continue! Thanks Amsoil for sticking to your desire to be the best!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dennis: space

I will buy this product again

I use this in all my car's and trucks

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Derek: space

I wont buy anything else!!

Best oil on the market!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jerry: space

I like Amsoil

I've been using Amsoil products for many years. I don't have to worry if I've gone over the 5,000 mile interval, because I know Amsoil will protect my engines. The oil filters are top grade, and great to use with Amsoil. I also use many other AMSOIL products. The gun cleaner and gun oil is excellent for my police service revolver and I use it faithfully, knowing it will protect my pistol, shotgun and assault weapon. The cost may be slightly higher, but the protection is excellent and guaranteed to perform.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Boosted: space

Best oil on the market

It's simply great oil made for great engines.
If you have a boosted engine stick with the best, you won't regret it.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bones67: space

So not want to useat any other oil

Have used for years on my 2000 Chevy Impala, 1995 Toyota corolla, 2010 and 20 12 Toyota Prius, and will be on my 20 17 Rav4 b

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by C6: space

Ow20

Oil exceed all expectations.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Danny: space

Love this product

In my truck

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jake: space

Great product

I use it in my 2014 Chevy Silverado

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike D: space

Only product I use

Since day 1 of the first oil change, and several others, 45K miles later it's still running like a champ. I've been using Amsoil for years. Nothing will change my mind.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Wheelchair Pete: space

Great all season protection, IMO

Been using this in my DD/cars for the past 10+ years and never any oil issues.
Good stuff.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by LadyTuner: space

11 years of the best!

I converted my car to Amsoil 11 years ago when I first bought her. She was 4 years old and had 78k miles. Once I changed her to Amsoil, she instantly ran better. Now at 176k miles, she has the cleanest valves any mechanic has seen! I'm proud to be raised on Amsoil

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cycotravlr: space

The Best

I use Amsoil Signature Series 5W-30 sinthetic oil in my 2006 Solstice and my 2013 F-150. Amsoil is the Best and wouldn't use anything else.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by racinjayson: space

I have bought, will continue to buy

This is a great product and I use it in all of my vehicles. The biggest difference is that all my motors run quieter than any other product I have tried including royal purper. Could not be happier.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jim: space

Amsoil is the only fluids I use, period!

I have 0 complaints about any product that I've used yet. My 06 Silverado and 07 Trailblazer both get Amsoil. 15k Mike changes with 0 issue

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by GREEN FLAMES: space

1ST TIME BUYER

I HAVE A BRAND NEW 383 STROKER ENGINE IN MY 2004 SILVERADO. IT WAS RECOMMENDED TO PUT A GOOD OIL IN MY ENGINE AFTER THE BREAK IN OIL WAS CHANGED.READ REVIEWS ON SEVERAL DIFFERENT OILS AND REALLY LIKED WHAT I READ ABOUT AMSOIL. WHEN I FIRST GOT MY ORDER IN THE FIRST THING I NOTICED WAS THE BOTTLES WERE MADE DIFFERENT THEN ANYTHING ELSE I EVER USED. THEY WERE THICKER PLASTIC AND ARE POUR FREINDLY. DIDNT NOT HAVE TO WORRY ABOUT SPILLING OIL ON MY NEW ENGINE.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Stan: space

Best there is

Best you can buy.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Kyle: space

My go to oil

Great product

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris W: space

I WILL buy this product again.

AMSOIL is THE ONLY oil and lubrication product I use in everything I own. I would put this up against any other synthetic lubricant any day.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dennis: space

I Would definitely buy this product again.

I have been using this oil in my06 Dodge Ram for years. Makes better oil pressure than other brands.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rusty: space

Great oil

Run, it in all three vehicles that call for 5 w 20wt.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

Quality product

I have used Amsiol products in all my vehicles for several years with good results.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mismo Titan: space

Titan Loves It

Switched to amsoil and my engine is quieter, and runs better. I tow a lot with my truck and know with amsoil that the oil is breaking down under heavy load.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Blu1: space

Few choices

Not many choices for 5w-50. This is the only real quality option. Thanks for making the wt.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cliff: space

There is no other oil like AMSOIL

I own a pickup and two autos, two utility tractors, four chain saws, three weed eaters and eight small engine machines. I have AMSOIL in each and every one. My Pickup is used to pull a large trailer and for snow plowing for several customers. I also use fuel cleaners, fuel preserve products, oil mix and grease gun tubes. I have experienced oil leaking and oil burning motors stop doing both and a one pull start on the small motors.There is no other oil and other products that compare to AMSOIL.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by CJ: space

Long time uses

Been using Amsoil 20 years and have had no problems. Put oil in my Durmax and put the big filter on and did need to change oil only once.
Amsoil has been making oil for years, now everyone is trying too.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cycotravlr: space

I will buy this again.

I use 0-20 Amsoil in my Family crossover. I run it 15,000 mile between changes and the oil still looks clean when I drain it.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Collin: space

I will only buy this product from now on

The Signature Series oil is the best and most money-worth-it oil that's available from Amsoil...period!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by headhound: space

Keeps my cars running long and strong

Minimizes actual engine wear while managing fuel economy. Yearly oil changes is great.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Otsg392: space

I will buy this product again.

I put Amsoil 5w - 50 I'm my 2012 Boss 302. Product works great for regular driving or hittting the track.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by The bear: space

Have used this product for over 25 years

I used this product in my SUV, runs smooth get better mileage and start very well in extremely cold weather. I used their product in all my vehicles and small engines.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larry for Life: space

Incredible Stuff

Amsoil makes a huge difference in the performance and longevity of your vehicle. Nothing else goes into my cars, trucks, lawn mowers, chainsaws, etc.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike G in SD: space

I will buy this product many, many more times...great stuff!

I've been using AMSOIL motor oil for just over 5 years now and been very satisfied, no complaints...ever!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Al: space

Great product

I use it in all the engines in my house. My cars, lawn mower, pressure washer and generator. I feel my equipment runs better and more efficient.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by soOldithurts: space

Use it in track car and without any problems

I use this oil in my track car. I have a magnetic plug and nothing has shown up there. The filter is also clean after each use (I check it). Oil pressures are good on track. I plan to use this oil well into the future.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Andrew: space

I would definitely buy this!

I run this oil in my 2003 Honda S2000 and I love it. Had my head rebuilt and checked the cylinder walls, cams, etc. with 111k miles on the engine with force induction. There were barely any wear at all! I will always run Amsoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Vader3: space

This is the only oil I will use is my Chevy Blazer

I use the 5W30 along with the Amsoil oil filter and I run it 15,000 miles before I change the oil. I also use the Amsoil AFT which can keep the transmission temperature up to 60 degrees cooler. Reduce friction and save your equipment

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Paul: space

Been using for years

I use only Amsoil in all my vehicles--engine, trans, and differential. Best products on the market.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Drake: space

Will buy again

Lasts well. Color is still clean after 5k. Gas milage is slightly higher. No oil leaks in a Ford Taurus with 200k.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JHPAINT: space

Great product

Great oil for direct injection engines

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Johny: space

Been using this for 15 years

I've been using this since 2003 in my Toyota Solara that has the V6 which is prone to sludge. I now have 470,000 miles on it and still running strong and does not smoke. I change it and the filter about every 10 to 15 thousand miles, sometime longer.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JC: space

Great Product

In work&personal vehicle.Work car approaching 300,000 miles-Starts easy in old weather-improves gas mileage-don't have to change every 3000 miles as you have to with conventional oil-can't think of anything negative

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by drew: space

High Heat Low Friction

I use this oil in a variety of cars and trucks i service. Some of these cars are turbos and some are natural aspiration. No matter the heat load in any of these cars or trucks they seem to have extremely low friction when i inspected during engine rebuilds.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Drew: space

The Best Oil Ever Made

I buy this oil about once a year for a friends 2004 Lincoln Town Car. He only drives around the city and occasionally to Richmond Virginia. He always gets a 19~20 mpg in the slow city with the ac blasting and on the highway 25~27 mpg. That is a 280 hp 4.6 liter v-8. The engine runs so smooth now its a huge difference from before the use of amsoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brian: space

Yes

In my motocycle

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Nick: space

Simply the best

The to go motor oil for all 0W-20, 0W-30, 5W-20, 5W-30, 10W-30 applications except europeans.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sam: space

My engine is super quiet now

My engine is really quiet now. That tells me that Amsoil is lubricating the engine in a way that the other oils can't. I changed all the fluids on my 2017 Chevrolet 2500 HD 4x4. Fuel mileage is up and vehicle noise ( engine, transmission, transfer case and differentials ) is down. it truly makes a difference.
I've also switched to Amsoil in wife's 2017 Ford Explorer, my son's 2015 Ram 1500 and my 2015 Tahoe Q7i SF boat.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Poppabear: space

Love this stuff

I use Amsoil products in my truck and my wife car. I started using Amsoil products in my race car many years ago and had such good luck with them I have been using them in anything I own with a gasoline engine. My truck has over 200,000 miles on it and it runs like new. We use my wife's car for road trips and I always ride with confidence in Amsoil products. I would definitely recommend Amsoil to family and friends..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Scott: space

oil

great stuff

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Two Hair: space

I have been buying this product again and again

I have been using this product (5w-30 signature series) for sixteen years. A little better gas mileage and I feel the auto is better protected in our high heat that we get during the summers here.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bill: space

Very good product and very reasonably priced

We Transport trailers with our pickup and run only Amsoil in it. Love the extended oil changes, especially since we run so many miles. Because of the ability to run more miles on it, it actually is cheaper to run Amsoil. Wouldn't run anything else!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KB: space

Best Product on the Market

By far the best motor oil I've used!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

Buy nothing but smsoil.

Use it in honda crv.Great oil. Long life.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pose: space

Engine Oil

I only trust Amsoil in all of my vehicles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dale: space

Mechanics Amazed at inside of engine during gasket repair

A couple of years ago I had my 1998 Chevrolet Silverado in the shop for an intake gasket repair. About mid-day I received a call from the repair shop asking me what kind of oil I ran in the engine. They were amazed as they told me they had never seen an engine so clean inside. I told them I had been running Amsoil in the engine for the past 1.5 years. I had heard of Amsoil for years and talked to a diesel mechanic a few years before and he ran Amsoil in everything he had. I figured if a diesel mechanic ran it in his vehicles, motorcycles, and lawn equipment it was good stuff. I have not been disappointed, I immediately noticed easier cold starts and better gas mileage in my vehicles. With the miles my familiy's vehicles travel, a once a year oil change with the extended life best synthetic oil on the market is a convenient and cost effective solution for ensuring my vehicles engines are protected with great lubrication. And the added bonus of creating less waste for our environment is big for me as well. Convenient online shopping and dependable delivery put my vehicle's lifeblood in my hands within days of ordering it. Love the product and will be using it for years to come.
Dale

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jean: space

i would buy more

very good

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by daves jeep: space

yes i would buy it again

its a great oil I have every use in my cars!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan: space

Nothing but the best

I use Amsoil oil for everything I own car pick up motorcycle lawn mowers weed eaters I wouldn't use anything less
The best is Amsoil oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shane: space

The Best

I have tried every synthetic oil over the years.Then I tried Amsoil signature series 5w-20 in my 2017 dodge Ram with the 5.7 hemi.Notice a big difference in smoothness and performance,like pouring a few energy drinks in the engine!!! I change my oil every six months, I wont be close to 25,000 miles but if I go over six months I know the engine will be okay. I have changed my oil with other synthetics that claim they can go 15,000 or one year, I changed mine at 6,500 and it was black and smelled burnt and was already starting to sludge.You won't get that with Amsoil. It cost a little more but it's well worth it !!! If your going to keep your truck or car for a long time Amsoil is the way to go,If you lease every two years don't bother.Give it a try it's THE BEST!!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Binor: space

Only oil I use

The day I bought my 2005 F250 4x4 I brought it home and drained the stock oil and refilled with 0W20 amsoil and amsoil oil filter. Since that day my truck has never seen any other oil or filter. My truck is now 13 years old and it runs like the day I bought it. I change my oil once a year no more no less ! ! !

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JC: space

Signature series 5W-30 motor oil

I have used the Signature series oil for years. I like having the protective properties of the oil with extended change intervals. I have one vehicle with over 225,000 miles runs great and uses zero oil between changes.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joe: space

A top oil

Use this in my Mustang GT....won't use anything else. Lots of debate as far as what's best but this is my favorite.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

If there was a better lubricant anywhere, I would be use it.

I have been an AMSOIL user for many years, and as a mechanical engineer know the value
of proper lubrication. When you know a company is using the best additives, and the best base stocks for their oil, the choice of where to buy is easy.

In the final analysis, AMSOIL is a bargain compared to other brands.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mark: space

Go with the best!

AMSOIL is in every engine I own!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Michael: space

Awesome

Simply the best oil to use. Thank you amsoil

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sean: space

High quality

Like all signature series it is the best oil I've used. Amsoil is one of the few oil manufacturers that shows testing results. They also sell testing kits. Their oil is top notch. Mobile 1 annual protection is basically a cheaper version of this. ( as it's not as good) if you want the best protection this is it. It also pays for itself as you can run it longer.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Christian Marcel: space

Too good to believe.

On January 20,18, I purchased a 2008 Dodge Durango w/ a 5.7, 4x4. It had 89,000 miles on it
The average mpg was 13.4. I was not impressed, and I don't drive like speed Racer. I do love the truck the power and the ride. I had used mobil one synthetic oil and filters with no change in mpg. So I decided to invest in Amsoil. I went with the recommend 5/20 signature series. I believe go big or go home. My mpg average moved up to 14.5 mpg. I also took a 4 hour each way road trip and got 19.9 mpg at 72 mph. I thought that was good for moving an 7000lb. all wheel drive vechical.
Any way I then decided to go all in changing front & rear diff and transfer case. I am now getting an avg mpg of 15.7. where I am now in Ohio it is hilly, so once I return to flat Fla I expect even more improvement. I am a clean oil fanatic, so I installed a oil bypass system. I have 2000 miles on the oil and it still looks like new. Yes bypass system and filters and oil cost a bit but the return on investment is after 25000, If you change your oil every 4-5000 Miles. The cost of Oil & filters saved, and engine wear reduction, pays for itself in no time. I keep my vechical s for a while. My suggestion is to change over to Amsoil signature series oil and 25000 mile filters. Oil is the cheapest thing you do for your vechical, do the best and I also suggest doing the bypass system. You save money in the long run while giving your vechical the best protection out there. I am Looking for a location that will use Amsoil to flush my transmission fluid. Even if I bring it in.
Hope you find this interesting and helpful.
Christian.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jason: space

Good Oil

I run this oil in my 2011 Land Rover LR4 with a 5.0L that requires synthetic oil. I've had this oil tested at the manufacturer's recommended interval of 7500 miles and there was still some life left in it. The next time I went to 9000 miles and had it tested, this time the oil was no longer good, so I'll stick with Land Rover's recommendation. This is with Land Rover's canister oil filter. Amsoil doesn't make a long life filter for it.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Oscar the oily otter: space

Heck yes

Been using AMS in all my vehicles for 15 years . Have not had any engine oil related problems yet!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by AK: space

Over 200K and going strong.

I have a Toyota Corolla I bought new in 2007. It now has over 200K miles on the odometer. It has had only Amsoil and the only thing I have had to do is normal maintenance and it still gets over 30 mpg. Amsoil is the only oil I use in all my vehicles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by The Duke of Earl: space

Best Oil on the planet

Had my oil changed at a dealership. They showed me some black sticky that came out of the oil pan. I called AMSOIL with my story and they had me send in a sample and some of the oil that drained. They did a thorough check and found that the oil had not failed in any way, some other contaminant apparently fell in while under warranty gasket replacement. Great company that stands behind their products!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tootall Ted: space

Many miles!!

1993 Cadillac Sedan deVille. 4.9 liter aluminum block engine. 351,136 miles!! Enough said!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

Use nothing but Amsoil in my vehicles.

Use at the recommended Amsoil oil change intervals. Never had any engine problems.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tuff: space

Tuffy

Just and great oil .

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robin: space

I would buy this product again

I run it and all my vehicles love it

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bill: space

I will be buying this product as long

2008 Lexus

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by 1968 AMX: space

AMSOIL beats everybody & More MPG

I am truly convinced that AMSOIL synthetic oil is the highest quality synthetic oil in the marketplace. I believe in my heart I get more MPG with this Signature Synthetic oil. I have been using it in all my hybrid cars for last decade or so. I love the quality, customer service and want to keep supporting this quality company. Keep up the good work AMSOIL.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Car burns less oil: space

I have switched to this exclusively

I saw a forum post with some oil test results. Amsoil was at the top of most of them. I switched to this in my 2002 Honda s2000. I'm 1 oil change in and my car hasn't blown up yet plus it burns less oil than with Mobile 1.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rookie: space

Best I've used.

Improves Gas Mileage.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by PW John: space

Best oil for a hemi

I have a 2007 Dodge power wagon with the 5.7 hemi. I work this truck hard, and this is the only oil that cures the notorious hemi tick even with 130000 plus miles and oil changes every 15000 miles. Well worth it if you love your truck.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Raptor guy: space

Love the products

A little pricey but peace of mind knowing that you have put the best you can buy into a truck that costs a bunch ! As crazy as I know this sounds I went from 13.1 mpg to 15 mpg only changed the oil . Is that even possible???

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Armymedic: space

Awesome

I have nothing but good to write about this oil. I change my oil once a year, and change the oil filter twice a year, every 6 months, however. That's based on my driving and may not be on your driving habits. I would follow what Amsoil recommends when using their oil. Other than that my mechanic comments how great my car runs, because my last car I put on 250,000 miles without a major breakdown. I highly recommend Amsoil products.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ricky: space

Oil

Excellent product. Bike runs cooler and smoother

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bam Bam: space

Needed the best protection

Just bought a 2018 Jeep Wrangler and wanted the best protection .... The same I had using Amsoil on my 1994 GMC 350k miles and 2003 GMC 230k..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cleve: space

Oil

I buy Amsoil because it has always worked for me. I have over 200K on my 97 Jeep, and the last 3 of my wife's vehicles went over 200K, one went to 286K before I traded it off.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ug_boy: space

smooth as silk

run it in my wife's CRV. I don't trust the Honda oils as they sludge out when converting to AMSOIL. Thankfully this is a new car, so I won't have this issue. A clean motor is a happy motor!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JD: space

Overall happy

I am more than willing to pay a bit more than the rest to have significantly better oil protection. Read the independent reports, Amsoil is bar none the top dog.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Del: space

Owner

I've retired 2 Ford E-350 vans, gasoline engines, both with 520,000 plus miles. I'm currently driving a third one, with 524,000.
I started using Amsoil, 100% synthetic, in each of these between 50,000/60,000 miles.
I also used the recommended Amsoil oil filter.
Changed oil every 18,000, and filter every 9,000.
Over the years and miles, I've saved myself a lot of time and money with Amsoil, over conventional oil and their oil change cycle, about 6 to 1.
Also saved a lot of money in vehicle replacement cost, because of each vehicle lasting about twice as long with Amsoil, over the normal.
Yes I'm a pleased customer!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Doyce: space

Only oil I use

Change oil every 10,000 to 12,000 miles. I know it would go longer, but I know for sure my bike is ready for any demand I ask of it.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mailman: space

I would buy this product again, and I have.

I love this product. I have not had any issues with my vehicles since switching over.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Matt the car guy: space

My go to oil

Never lets me down and keeps my car running like a top. Black stone lab reports always come back good viscosity turns out little thin after 5500 miles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Anthony: space

AMSOIL products

My 1998 Chevy 4.3 truck has 350000km right from new I have used AMSOIL products bumper to bumper and never touched the motor or transmission. Even in cold weather at -25 Celsius not plug in it will start every time.I have been using AMSOIL products for 35 years and I am not about to stop.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rick: space

I will definitely buy this product again!!

I use the 5w30 signature oil in my 2012 Chevy Sonic that I use for business. I use the car to deliver auto parts as an independent contractor. It presently has 339,000 miles on it and going strong!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Whododgeit: space

I would buy thia product again

It good oil and keep engine running for life

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by SammyD: space

Great oil!

Amsoil makes one of the best if not THE best oil out there. You get great longevity out of their products, especially the signature series. I've been using that oil for a few years now and I noticed a slight increase in mileage and engine smoothness in my Accord. I just bought a new car and when the free oil changes(2 or 3) are up I'll be using Amsoil for sure.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Frosty mike: space

Only oil I will buy

Amsoil is the schit hands down the best in synthetics

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Subaru impreza: space

Amsoil synthetic

I have uses Amsoil for 8 years now. I go 20,000 between changes and 10,000 for a filter change in between. Never burn oil and I get constant steady power and great milage. Im convinced it the best oil on tge market...period!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by PapaDukes: space

Good stuff

I have been using Amsoil products for over 25 years, and now put it in my kids cars. Living in a place where dirt and heat are common place Amsoil has preformed above and beyond any other products I have ever used. With the cost of new vehicles I cannot think of a better product to extend the life of a vehicle. Goods stuff.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Adalarm90: space

Only oil I can review at the time

Great oil, I normally use Mobil 1 and am trying Amsoil oils. I believe they are worth it. I still think they are expensive but they seem to last. No difference in performcance(like more MPGS) but I have noticed the signature series oil lasts more time without changing color like old/worn out oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by FMF Doc: space

Best performance oil on the market

Used in my SC, 2014 Ford Raptor. Longer oil change interval if required. Dependability during the most demanding conditions.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Curt: space

Great product love Amsoil products!!!

So far oil seems to be holding up well,never had any issues with Amsoil products.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mark: space

I will alway use this and other Amsoil product.

Amsoil allows more time between oil changes with a filter replacement at 5000 miles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by James: space

I would buy this product again.

Switched to using Amsoil and noticed a difference immediately at how quiet the engine sounded. I also noticed a bump in fuel mileage.

I currently have a 2007 Mazda 3s with 115,000 miles on it and used Amsoil since it was new and it has never had any oil related problems or leaks.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Acdelco: space

Good product

Use this in 2 cars & 1 truck have over 105000 miles on Pt Cruiser, engine is quiet, & doesn't burn oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Toyotaholic: space

I highly recommend this product.

2006 Toyota Corolla. 250k miles with only 10 oil changes. The engine still going without any issues. Now I use it on my 07 Fj cruiser and my 15 Toyota Corolla.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeffrey: space

Great results!

I have used Sig series 5W30 for the last 100000 miles on my 2003 Lexus es.Just had valve cover gaskets replaced.Tech said engine looked like new inside with valve covers removed..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Fernando: space

I will buy this product again

My vehicle runs great

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Manny: space

AMSOIL 0w20 and AMSOIL 5W20 synthetic motor oils.

I have been using AMSOIL Synthetic oils in my vehicles for over 10 years. Two Saturns (a 2000 SL2 & a 2002 SC2), Two Hyundai Elantras (2014 & 2017), and a GM Sonic (2015) . I have never had an oil related problem with any of the engines. There was significant affect on the LACK or wear on all of the engines I would recommend AMSOIL them to anyone who purchases a new car, or a used car with not many miles on it.

P.S. I have been buying NEW automobiles since 1970. I switched to AMSOIL synthetic motor oils in 2004, and have never used anything else in my automobiles (and my lawn mowers).

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chuck: space

Have used Amsoil products for over 30 Years.

Used Amsoil OW-20 oil in the last two Hondas I've owned and currently in my 2017 Honda Civic turbo. Aside from the fact that Honda makes a very durable Vehicle the use of Amsoil OW-20 has without question lengthened the lifespan of my vehicles. I put close to 200,000 miles on the previous Honda's I owned and expect with normal maintenance to do the same or even better with my current Honda.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Barry: space

I have been using this product for many years

Wouldn't think about any other product for my 2007 Silverado that has 223,000 miles on it. I started using it back when i purchased my first new 2000 Silverado and have used it ever since.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Timmy: space

No plans to change

I have been running Signature Series Synthetic Motor Oil in my 2010 FJ Cruiser (4.0 V-6) since it was new. The vehicle now has 146,000 miles on it. I drive 140 miles per day for work, towing a small boat for part of the commute. I consider the use of my vehicle pretty strenuous considering 1000 plus feet of elevation change, temps from 0 degrees to 105, all on horrible highways from the desert to the mountains, including a little off road crawling. I grew up around garages and race cars and do my own maintenance / oil changes and am always impressed with how good the oil looks when I drain it, even after max mileage intervals. I have had zero mechanical issues and get the same fuel mileage as when the truck was new. The one time I had a shop change my oil due to time constraints and other service, the mechanic commented the used oil looked and felt fantastic still, at 12,000 miles.
I use Amsoil products everywhere I can......tranny, differentials, transfer case. I'm sold on Signature Series Oil for all of my rigs, and sold on the people and service I get from Amsoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

I would buy this again

Awesome oil. Makes my Cecile run smoother and quieter. I love Amsoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by H20EXPLORER: space

I WOULD DEFINETLY BY THIS PRODUCT AGAIN

In my 19 year old truck with 257000 miles, the performance improvement is noticeable.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JD: space

Really wonderful oil

Started using the Signature Oils last year. I can tell the difference from regular synthetic oil. In the long run it's probably less expensive to use the Signature because of more then double the change interval.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Good stuff

You can't beat Amsoil, and at the price when you become a preferred member, the price is as good or better than most other oils.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Josh: space

One of the best I have ever used

Amsoil products are constantly the highest quality and the best protection for all my vehicles. It has revived and made my daily driver (over 20 year old vehicle) run like a top. It is the prefect addition to any vehicle that you want to get long use out of, and regardless of the environment have the best protection for your engine.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pepe: space

Started using it......will never stop!!! Whatever I drive!!!

Always heard about it in the past, but never tried it. Finally tried it and will always use it!!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gutsi: space

Best Oil

I've been using Amsoil in all my cars (6) for over 10 years. My 07 Honda Fit just turned 400k miles and is going strong, along with all my other cars running Amsoil. And I save money by only having to change the oil every 15k miles. Excellent product that actually saves me money in the long run.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mk: space

Love this stuff!!!

I drive 150 miles daily and amsoil helps my engine run smooth and cool.. Even when I'm due to change it feels like oil not syrup... Great price for a great product.. would buy amsoil again and again.. Thanks amsoil

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tony: space

5/50 Signature OIl

Have previously trid various oils in my 2012 Boss 302 & Amsoil 5/50 is been my choice since it came out .Great Stuff''''''

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ken: space

Signature 5-30 and 5-20 and 100:1 2 cycle oil

I installed 5-30 Sig in my Tahoe last May. Through this May I completed 10,000 miles including through a winter here in Northern Michigan. The shop I use was touting another oil and warned me that no oil could be used all winter in multiple cold or very cold start conditions and last through the whole winter. Well, I had the oil tested after a year and even in this harsh environment, the oil still had 3,000 to 5,000 miles of life left. Kudos to the product. Yes the Tahoe does use some oil--maybe 3 quarts total over that period, but it did amaze me that the oil held up and was still good after a year. Fuel economy on a road trip to Rochester, MN with a change of trans fluid to Amsoil synthetic showed an increase in mileage from about 19 to a solid 21-22 MPG. Fluids are the only change and this vehicle is otherwise a gas hog.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Short Circuit: space

Use it believe in it

I have used this product for over 20 years. I have actually torn down an engine (oil pump shaft broke) that I used this oil in close to its whole life and the internals of the engine were remarkable. They showed very little wear and tear and none of the typical deposits you would see in an engine with 135,000 miles on. I know there is a lot of churn about who's best and so on but speaking for this oil it's worth every penny. Your buying peace of mind.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jerry: space

Yes

Good product

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pgf1: space

I will be buying this product again

I have recently changed to this after considerable research,

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lee: space

I am not going to stop using this product

Since I start using Amsoil signature zero 20 100% synthetic oil on my truck start ups Are much quicker and Engine runs more smoother and more power.My gas mileage has improved significantly

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

Great product

Start using AMS oil 10 years ago. After 250,000 miles car is still running great.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Theron: space

Reputation

Lots of confidence

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Don the mechanic: space

I would buy this product again

This Product saves money. It gives you great protection for your engine over a longer period of time, so you do not have to change it as often.When used with the Amsoil Ea Oil filter, it does even a better job. So in the long run it is more economical to use.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ED: space

Long intervals

As I have gotten older I like how I now only have to change the oil only once a year. I take care of 6 cars (mine and my kids) so this really helps me do other things besides changing oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

I would buy this again

Long life offered

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lambshark: space

The only oil I use.

Been using Amsoil for years with awesome success. I always use their oil filters as well.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Harvdog: space

We are extremely happy with Amsoil

We love the oil , filters and grease. Currently we have just over 411,000 miles on our 2004 Honda Element. Thanks for providing such a high quality lubricant.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tito: space

Excellent Product

I use this product in my vehicles that specify 0W-20. Since switching, the engines are much quieter and seem to run cooler.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Still going strong

I've been using Amsoil Signature Series in my 2010 Toyota truck exclusively. Eight years later and 200,000 km later it still runs like new. I wouldn't think of using anything else.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Satisfied: space

Cured Generator Oil Consumption

Great for my new air-cooled Generac 11kW automatic backup generator. It was consuming another well-known brand of synthetic 5w-30EP oil at an unacceptably excessive rate. After researching the various oil properties and what others with air-cooled generators down in hurricane country use, I decided to try Amsoil 5w-50. After switching my oil consumption completely stopped. I use it or Amsoil 0W-40 in all my small engines now.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

I would buy this product again

Amazing product so good im happy i made the right Choice

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by PJ: space

I would buy this again

I started using this about a year ago and now have in my two motorcycles, my fiancés bike and a couple of friends.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by CJ: space

I will purchase again

The Amsoil Products not only protect my vehichle to the highest standards,they save me time and money.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeff: space

Great Product and Service

We have used Amsoil products in all of our vehicles for the past 8 years. The engine in our 2010 Equinox is still running strong with 155,000 Amsoil miles. We have used the Signature Series 5W-30 for the past 75 of so and even with the high mileage we lose almost no oil between changes. We do change at about 12K to 15K though due to the heat in the summers of central Virginia.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gary B: space

I would buy this over and over again.

I use this in all for vehicles I own for the last 20 years. My V10 Motor Home, my Hemi SUV, my V-6 convertible beach cruiser and my classic convertible street rod. Extremely versatile and has never let me down.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Anson: space

Top oil, over every other on the market.

I've been using amsoil 35 years, I believe it's what gave me 450000 miles on on a 77 Porsche. Today I used it in my 18 Kia soul turbo and 16 Kia turbo koup, read the specs it's the best oil for any application.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BATMAN: space

OIL

This is the only oil I use in all of my vehicles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Scott: space

Amsoil is good stuff!

My engine has 245,000 miles on it, (second engine in the car) and I have used Amsoil for about 2 years. I recently had an oil analysis by Blackstone Labs, and they told me that the wear I had represented about 5,800 miles, but I had actually 22,600 miles on that oil change!! I could have run until 25,000 miles, so next time I will.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by TDR: space

Only oil period.

Use this in my 2017 Kia 3.3 and like that I save money with my longer oil change interval.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

My F150 and Highlander both run with Amsoil Signature

My vehicles never run better. I like the convenience of changing my oil once a year.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

Best oil

I have been in the automotive industry for 45 years and have seen all kinds of oil and lubricants. Many claim amazing things. My personal experience with Amsoil has been long term. First my race bike. Nothing compared to the performance of Amsoil. Runs cooler, lasts longer, overall good results. My truck now has 343000 miles. Still does not use any oil. My Harley picked up 3 miles/gallon and runs cooler.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tommy: space

Gets the job done

Great product

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tone Capone: space

Love Amsoil

Amsoil is the only well we use in our cars. Are even got my family and some of my friends to switch

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Loop: space

Long time user

Great oil

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dave: space

Great Stuff. Highly Recommended. Awesome performance

Here in Edmonton, Alberta. We've got crazy And confusing weather. The cold gets up to -50 So this Oil does Absolutely great performance. You've gotta have this in coldest weather.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Corvette Mike: space

Will continue to be a customer

Just recently changed my C6 Corvette to Amsoil. Looking for cooler operating temps and the reduction of lifter noise on cold starts. Took a 200 mile trip ran about the same temps as my previous synthetic oil. Engine seems a little quieter with cold starts. The cruising season is just getting started her in Ohio. The true test will be when I track the car at some of our clubs autocross races and high speed events. Two other friends have witnessed improvements with this product and switched based on their recommendations. They both race frequently and push their Vettes to the limit without any issues.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by juicey j: space

delivery service

seems to be working good. I put a 100,000 miles a year on. does not keep engine as clean as redline. lots of varnish from amsoil at the 100,000 mile mark. redline at a 100,000 looks just like knew inside the engine.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larry: space

Yes

I started using this oil many years ago. When first bought it I used your oil filter and oil I put in my Ford 150 pickup truck 2002. I left in my truck for 6 weeks and drained the OIl and put in new filter and oil this cleaned the inside of my motor now the oil stays very clean. I now have over 363,000 miles on my truck still running strong

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by windom: space

again and again

Amsoil oil is amazing. You are the best.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Nosocs: space

Shmoov...

I use in a 1999 Acura CL/3.0 coupe...starteed @ 40,000, and have used for last 180,000...car has 220,000, and runs as shmooov as any vehicle out there....@ 185,000, I changed the transmission fluid, using AMSOIL transmission fluid...aGain.....shmoove shifting....Best product for any vehicle!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jake: space

I have only ever used this in my truck.

Best synthetic on the market. It's the only thing I use in my truck.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Serge: space

Great oil as always.

As always, AMSOil didn't disappoint. Ordered this for my mom's 2016 Honda Accord.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jose the big burrito: space

It's amazing oil

Super impressed with all The Amsoil products. Extebdes oil change intervals makes it a no-brainer.
vehicle
Vehicle runs so much smoother, better gas mileage, it's a win-win

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tony: space

I would buy again

Use for my car

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mel: space

I run this oil in all engines I own..

I always say that if Amsoil don't know how to make Synthetic Oil NO ONE does..
Because they have been the first since 1972..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by rdj519: space

1999 z71 truck

300000 miles with once a year oil change. Amsol is the best

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ...: space

...

Great products

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rusty: space

Very good product!

I use Amsoil in everything machine I own. That Amounts to one diesel pickup to three gas pic up and two mustangs one being a 2011 Shelby GT500

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dennis Oldblood: space

Best product ever for use in your car

Amsoil protect my crankshaft when my oil pump failed and I get better gas milage, epa rating for my car is 35 mpg and I repeatedly hit 40 mpg.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris: space

Good Stuff...period

2010 Toyota sequioa w/ 200k on the clock.
Doubled oil change interval to 10k, doesn't use a drop between changes. Frequently idle and tow in hot Mississippi weather. Noticeably quieter valve operation over other top shelf synthetics. I just did a 200k service and noticed there is zero sludge in the engine. It was as sparkly as a transmission.
I expect 300-400k out of this engine but it is a Toyota not a Ford!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Los: space

Great Oil

The best oil I've ever used.! Hands down!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Poncho pete: space

5w20 signature oil

2013 Kia Rio o my has a 3.5 qt capacity. Best oil I've seen for this scenario

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

Love Amsoil

Only Oil I will every use on my high performance cars

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chance: space

I would definitely buy again.

Used for engines and trans. I researched oil products IE: Royal Purple, Mobil 1, and Amsoil. Amsoil won.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brian: space

Yes

On thanks

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Subaru calls for this Wt oil

My new Outback calls for 0-20 oil. This is a difficult thing to believe in considering I am old sckool and would rather have a heavier oil in the motor.
So if I am going to put thin oil in this new car, then I want the best I can get.
I been using AmsOil products for a while now and have no complaints .

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ryan: space

My new favorite oil!

My 302 race engine loves it! My old oil would barely last 1,500 miles but signature series is still golden after 5k! Thinging about swithing everything i have to it and see how a stock engine does up to 15,000!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hawk: space

The only oil I will use.

The best oil I have ever used and I tell everyone I know.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan the man: space

That's the one for my car

For the long mileage & city

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joe: space

This oil is some awesome stuff.

Unlike other oils I have tried in the past this stuff seems to work very well in my 5.3 liter vortex, she runs much quieter and cooler then before, I was a big a mobile 1 user before trying the amsoil and I've been using it ever since.

If you rilly listen to you engine it will tell you what it likes, while that may sound crazy to some people to me this stuff is definitely approved by my motor lol. It is good stuff a bit pricey but you will get what you pay for with this product there's no dought kn my mind.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jim: space

Good for another year

I bought SS 5W-30 and a 15K filter for less than 4 oil changes

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by B: space

Simply the best stuff ever

Amazing products. Will not run anything else in my vehicles, atvs, snowmobiles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by DonV: space

BillV

When changing oil in a turbo engine the new formula Amsoil Signature series is a no-brainer!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by 392 SRT: space

Best EVER!! BAR NONE

I was introduced to AMSOIL in 1989 and ever since then it's all I use. I've had dealerships and Auto parts houses try to sell me Royal Purple and Penzoil and Mobil One and I stop them before they even get going good. And I tell them, "Sorry that you like trashy oil in your prized possessions but as for me I only run the best, and that's Amsoil. It's been around since the 60's and it's never failed. So, why not use something that stands the test of TIME!!? That's why I use it, I "Know" it won't fail."

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Oldfogey: space

using amsoil for over 20 years.

Run it in every vehicle I own and my kids. Best product on the market

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larzman: space

AMS oil signature 10W-30

Product is terrific. Improved engine idling & gas mileage. Good engine wear too! Shooting for 300k & beyond!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mike: space

So far so good

Time in between changes

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by H.d. Hood Jr.: space

Great stuff !!!!!! I only use amsoil

Works great lasts a long time !!!! Over priced though

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ironrail: space

I won't use any other oil

We have a 2016 Honda Pilot and a 2014 Jeep Gtand Cherokee. The Pilot gets 28 mpg and the Jeep gets 24. I truelly believe it's because of AMSOIL. When we picked up my wife's Pilot from the dealer I told her that within 30 days i'll have it running so smooth that she won't know that it's running. She gave me the bonehead look. Long story short, both vehicles run as smooth as silk and the mpg's are higher since AMSOIL. Not long ago i got into her truck and i didn't know it was running. I asked her if she was going to start the truck before we leave for our trip. That's basically how the story goes for all of our cars; lawn equipment and anything that uses oil. It's the best you can get.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Kyle: space

Yes

My vehicles definitely feels it has more performance.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeff: space

Amsoil 5w30

Use in my Toyota Tundra since new 2006! 270,000 mi. Great protection, runs well & very consistent!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Andy: space

Excellant oil.

Use it in my 2000 Honda civic SI with 220000 miles on it. Still runs like a champ.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bill: space

Mmmmm gooo

It's the best

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shawn and Patricia: space

Great product

Best synthetic oil in the world it's the best and only oil we use.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dale: space

Great Product

This product is awesome, since I do not put many miles on my vehicles, with getting a Demo from work, it is nice to only have to change the oil in all of my vehicles once a year and know that it comes out as clean as new when I drain it! Superior product and highly recommend!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Coulee: space

Signature Series 5w-40

Great oil, change it once a year. Been buying Amsoil since 1980, first as just a customer and then as preferred. I use only Amsoil oils, gear oils in tractor, small engines.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Clint: space

5w-30

Awesome oil! After changing the oil in my wife traverse to Amsoil everything has been running smoother. The only down side is sometimes my wife will start the car waiting for me to leave the house, I'll get in the car and try and crank it again because I cant hear the engine running it's so quiet now.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mark: space

I've been with AMSOIL since 1988

I use it in my 2 wheel drive 4Runner and have 273,000 miles on the car all with AMSOIL.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by George: space

Awesome oil

Amazing oil for the Toyota FJ. FJ ran better and oil at change interval didn't seem as dark.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Nathan: space

I buy this product every year

Have been using in my last 3 vehicles

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Imy: space

Even better than I thought

Works as designed; and extends oil changes intervals

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Imy: space

Worked as designed

Gain in mpg and more miles/time before maintenance intervals

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Maiden Youesa: space

Get the quality your $$$ deserves Amsoil

I just changed the oil in both my rides and loves the quiet smooth sound when running my signature series.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Kevhead: space

I will not consider any other synthetic than the BEST.

I started using amzoil products before being called amsoil. I use the signature series oil and Eo and Eat filters. I change my oil once/yr. And I literally do not burn any oil in that yr. With my 00' tundra V8 using amsoil. My 02

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by workamper: space

Run with this oil for 30 plus years

Nothing on the market that beats it

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rick: space

I will buy this product again and again

This is the only kind of oil that I will use in my vehicles

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Drew: space

I would buy this product and use it in every car I own

I own 2003 s2000 that I recently rebuilt the cylinder head on. Prior to the rebuild the car was turboed for a decent amount of time. The car currently sits around 112k miles at the moment after the rebuild. The car has been running Amsoil signature series for most of its life. When I inspected the camshaft, cylinder walls, etc during the rebuild the car showed absolutely no sign of wear anywhere and this is after being turboed and ran hard for a decent amount of time. I moved back to 10w30 signature series after the rebuild but still great stuff.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shimmy: space

ONLY Amsoil!

I've taken several engines apart but only engines that have run Amsoil and they only need coolant system work. Conventional oil precipitates out garbage and sludges up engines resulting in CLOGGED oil passages. If your switching from conventional, get the best protection you can get that has tons of positive history. Do your homework/research to understand ALL the costs involved. You will determine Amsoil is the best switch you can make for your vehicles.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Railrunner: space

A Trusted Product

I have been using Amsoil products in my vehicles and motorized equipment for many years and relay on its quality. As a "gearhead", I know how important using quality motor oils and greases are to machinery. They are my first choice for lubrication fluids.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by K-Mac: space

Only the BEST Oils for my vehicles

I only use American AMSOIL in all my vehicles. For this one, I use it in my 2005 Honda Fit 1500cc..

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by K-Mac: space

Only American

I only use American AMSOIL in all my vehicles. For this one, I use it in my 2016 Nissan Caravan NV350.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeff: space

Great product

I run Amsoil oil and filter in my Yukon Denali 15,000 miles between changes. Just reset the change oil message at 7500. Doing this for years with several GMC Yukon's. At 250,000 plus miles no oil burn at all. Very impressed with not having to go under the car twice as much.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ricky: space

Best oil you can buy

Awesome cold start protection, and anti-wear lube, simply the best

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mustang Larry: space

Buy again

So far all is good.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mustang Larry: space

I will buy this product again.

Why is it when I change my oil does my mileage drop by 2mpg. For the first 400 miles 1 1/2 to 2 mpg less then it creeps back up.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ron the Tyrolian: space

Great products

I have relied on Amsoil products for years to protect my engines and it has done exactly that.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by SamLac: space

Why change?

I started using AMSoil in the mid 80s while in Alaska. Cold extreme make lubrication very critical. At minus 40, most petroleum lubes won't even drip off the dip stick and when started cold you can hear every bearing in the engine as there is little or no lube flowing. No so with my AMSoil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeff: space

Not worth it.

I've been running 5W30 Signature Series in my 2002 Tacoma since putting it on the road in 2016 with 116,000 miles on the engine. I have since had Oil Analyzers (Amsoil, Inc.) test three samples from the truck so far, and have yet to have the oil last more than 13K miles before being told it's time for it to be changed. So much for the 25,000 miles/1 year claim...

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Grizz: space

This stuff is THE BEST!

I have 2 vehicles that have had this oil in them (changed every 15,000mi) since I bought them new. They both have mileage approaching 250,000, and they run like BRAND NEW. My newest vehicle is a 2017 Subie Forester Turbo so it gets Signature 5W-30 every 10,000 miles, and I'm sure it will see 200k and beyond.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by GF1563: space

Great product, well worth the money

Love the extended oil change intervals and my fuel mileage increased slightly, which leads me to believe it must be lubricating everything very well.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pat: space

This is the only oil I will put in my engine

It's great year round hot or cold

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Don: space

Will Always use Amsoil

Several years ago I switched to Amsoil in my GMC Yukon. I was very impressed with what the Signature Series 5w-30 Motor Oil looked like after the first oil change. With all the oils and products that Amsoil offers, I have since switched everything I own over to Amsoil. Even my lawnmowers.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by dhgguy: space

I can recommend this product

Used in my F150 exclusively. Excellent oil & filter.
Would not use anything else.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ronv: space

Great product!

I have used Amsoil for 30 years and wouldn't think of using any other oil.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mister nice: space

Yes

Love that you don't have to change oil as offer as regular oil. Is is a little high. Hey but you get what you pay for.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Henry: space

Good stuff

I use Amsoil exclusively

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jblev77: space

The best synthetic oil

#1 for 3.5L ecoboost

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

This is the only oil I run in my Silverado Cobalt, and GTO

I like being about to change oil at any time between 5-10k and not have to worry about weather or not the oil is doing it job !!!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by RebelnOhio: space

Amsoil always works!

I have been using Amsoil for over 15 years and have never had a problem, it's a well proven product that I trust in all of my cars for work and for pleasure. I will will continue to use Amsoil and benefit from it's proven results! I own a Livery/Limo Service and I drive about 40-50K miles a year on various cars and I believe Amsoil is the best Oil for all of my vehicles. With the long 15k Mile change intervals it is a money saving gem and your engine benefits 100%. I recommend there products highly!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KENT: space

SIGNATURE SERIES SYNTHETIC MOTOR OIL

I've used this brand and series in my Dodge Ram 4.7 v-8 since I acquired it at 90,000 miles. I've driven another 70,000 miles since and the engine is stronger than it's ever been! I expect to drive this truck until at least 300K miles because of the Amsoil Signagture Series Synthetic brand motor oil. I won't use anything else!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KK: space

Great Stuff

I use Amsoil on my SUV and love it!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tom: space

Great Oil

I use ansoil on all of my trucks, motorcycles, ATVs. This oil I use on 2017 Hemi 2500. It cannot be beat.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by G: space

I love it

Instant satisfaction, after the first start up i could already hear and feel things running smoother.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Redtundra8: space

Great Oil

This is the best oil money can buy in my opinion. I use this in all my vehicles and have for the last 12 years. Love only having to change the oil once a year. I highly recommend this product.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pat: space

Best line out there

Bestboil products on the market by far. I run it in all my vehicles

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Billy G: space

No issues

I have used Amsoil products for many years in all of my vehicles and small engines. I have never had an issues. I recommend Amsoil even though it is not the cheapest but the delivery is very prompt.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Wingsprnt: space

Does what it promises.

Not sure about the oW-20 weight here in Florida, but that is what Honda calls for.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Greg: space

Good product

Always met my expectations.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by MatsB: space

Excellent products.

Using Amsoil in all of my family's cars. Using Signature series in cars that drive over 12,000 miles per year, and XL series in cars that drive less than 12,000 miles.
Sent a 27,000 mile sample for testing to a independent lab, and they recommended 30,000 miles next time based on the excellent results.
Also using Amsoil in all lawn equipment and for a standby generator.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert Long: space

I would definitely buy this product again

Great product gives better fuel mileage and cleaner oil after changes

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

The Best There Is

I've been using Amsoil since the 1980s in everything with an engine. And have bragged about it's benefits to anyone who'd listen.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Increase mileage

I get better mileage with Amsoil
I run my 4x4 very hard and Amsoil is doing a great job of keeping it running strong

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Elvis of Aragorn: space

Great results

My 2004 Silverado (5.3L V8) has had a steady diet of Amsoil since its second oil change. I have stuck to the 10,000 mile interval, using Amsoil Ea filters & Signature Oil. She's about to roll over the 200,000 mile mark, and I have had no engine issues. I use Amsoil Signature Synthetic Oil in all of my vehicles, and plan on keeping it that way.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pinto: space

great in the city

I'm city driving in a 4x4 Ford van and after my last oil change the oil was still in great condition after 15,000 miles. just used the cleaning solution so lets see how this improves engine longevity. really happy with all th products I have received.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by S2kadi: space

The Only Oil I Trust

I use Amsoil Signature Series in both of my cars that are susceptible to burning oil. The 10W30 goes into my Honda S2000 and works great! Amsoil is the only oil I use in my motors and gearboxes, after trying out several different brands, I have found their quality to be of the best.

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by pro4100: space

Top Notch

I use it in my Subie Forester and my silverado 1500. no problems ever!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Quick charge water: space

Best stuff on the market

Yeah like to 25,000 my old changed

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Beast: space

10K Oil Changes

I will never use conventional again. 10K mile Oil changes, or once a year. You cant beat the quality and value of this product. No dealer or mechanic can ever persuade my to change every 3k miles again!. Get you some!

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ScoobyVTEC: space

Improved MPG

Bought Amsoil for all of my cars so I wouldn't have to change the oil so frequently and for the protection it gives all of the internal moving parts. I've noticed an increase in MPG and smoothness when I drive.
2017 Civic Type R
2012 Pilot Touring AWD
1998 Civic EX

Item Reviewed: Signature Series Motor Oils
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Donvito: space

I will always buy this product

I use this in my 2005 Jimmy 4.3 Vortec. I've started using it since 30,000 km on the vehicle which I've owned since new. I love this oil. I go one full year 25,000 km before I change the oil along with the Amsoil filter. Oil is great, engine runs quiet and effectively with this brand.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Eddie: space

Top Quality Oil

I have discovered about amsoil about 2 years ago, and from then and now. I have switched to amsoil for all my vehicles. Especially my 96 Jeep grand Cherokee. I had to change my oil every 2months because it was burning the oil really fast. Till i made the switch, 8 months and the oil is still in good condition. This product sure made my money's worth. I really recommend this brand of oil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rallimaro: space

Best oil I've been using for 6yrs

I always order signature series for every oil change on all my vehicles and very been disappointed with the protection.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jim: space

Great product

The bottle is shaped just right in the opening makes for a clean poor without using a Funnel

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rick: space

Such a drag to put it in a snake oil dealer's proposition

Straight up go smell the difference between the basic conventional oil, leading competitors and amsoil. You'll smell the difference. From regular oil to semi senthetic to full senthetic to amsoil you smell the synthetic in its distinct form. I'm OCD AF so I will only go 3,000 miles per oil change regardless of them saying I can go 25,000, but... I get a lot less chain chatter with amsoil over the leading competitors (since I can't name names)! What ever, we'll keep it PG.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by PJ: space

Excellant Products

I have used the Automobile oils, the outboard engine oils and lower unit lubrication . I have also used the new gun oil lubricants because they work. I give all of the products that I have used a 5 Star Rating. Their boat trailer wheel grease which must go in and out of the water is great also. After launch and retrieve I go down the road at 65 mph with splendid results!

PJ

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by roadpounder: space

real oil engine protection

I have been using signature 10-30 in my vehicles for several years now and it really protects, keeps things quieter and cooler, I love this oil, it's all I use.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mgk: space

Love this product

I use it in all my gas powered vehicles

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BB: space

Great product

Yes you can change your oil once a year. Got to use Amsoil filters though. GREAT PRODUCT and saves a lot of time and money over 5 oil changes in a year with regular oil. will never go back to regular oil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Josh: space

Great products at good prices

I use the full line of amsoil products in my home garage/shop and have been very satisfied with all of them in all of my personal cars, powersports, and customer vehicles.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Eric: space

Only oil I use

My car usaully can burn about .3-1 quart of oil every 4k interval. Since I switched to amsoil I have not have any oil consumption problems no matter how hard I beat on my car. I LOVE THIS STUFF. I use it on every vehicle.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Nightrider: space

The best oil to keep your car running great!

Ever since I've started to use Amsoil products, my vehicles have been running more efficiently. I would highly recommend Amsoil products to anyone wishing to reduce the wear and tear on their vehicles.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Steve A.: space

I'm a believer...

I use Amsoil in all three of my vehicles. After reading and researching this product I'm confident that my engine is protected to the fullest. I feel the smoothness of the engine every time I mash my accelerator. Very confident in the additives to clean, the lubricants as it coats, and the molecular structure to keep my engines running smooth. And to top it off, I only change oil annually. I'm a believer...

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chuck: space

Buy this product

Have used this product for a couple years now. Great oil. Will not use any other oil

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by TurboZ: space

FULL CONFIDENCE IN AMSOIL!

I've used Amsoil in my personal & family vehicles for over 10-years now. For these applications I use the Signature series 5W, and 10W-30. Since switching to Amsoil I've had zero mechanical motor issues and both engines are now approaching 200,000 miles and still running strong! I'm a DIY home mechanic so my cost per car is about $65 a year (including everything: tax, shipping, oil and filters).
Amsoil is... Superior protection with just one oil change per year, per car! You can't beat that!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dog: space

No other oil

I use Amsoil in my farm equipment and vehicles. Use nothing else.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

Have used it faithfully for years

It was originally recommended to me by a friend nearly 20 years ago and I have used nothing in my vehicles but Amsoil lubricants ever since. I have a pick up with nearly a quarter of a million miles on it and still going strong. I think that they are the best products made for all your vehicles, bar none.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jerry: space

Again

Good product

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Flemwad: space

I've used your product since 1986

I have it in both my vehicles 2005 Toyota tundra and in my 2015 Toyota Camry I love the stuff words can't describe. Zero friction zero where . I have six of my closest friends all hooked on it too and they love it as well

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Richard: space

Great product

My engine and transmission both have responded very well to your products. My engine even runs smoother

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by R Speakerphone: space

Improves gas milage

There seems to be a slight advantage using Signature Series over the XL oil. It seems like I get an additional one or two miles per gallon when using Signature Series compared to XL. One thing that is unusual about Signature Series is that it can take on a red tint after a few thousand miles. I was concerned that this might indicate that transmission fluid had contaminated my engine oil (?). Calling customer service and speaking with a technician, I was assured by the technician that this is caused by the anti-oxidants in the oil that sometimes take on a red tint.
So far, I'm very happy using Amsoil products and will continue to do so.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by G: space

I would like to by this oil again

Great customer service

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by CruzCTRL: space

I'm glad I changed my oil

With Amsoil, I am saving time not waiting at the dealership, not paying them to change my oil, not worrying if my oil cap is tight; now I'm changing it myself every 10,000 miles, gaining 3-5 MPG, and, if I catch the deal, it's delivered to my house for free. All pros, no cons.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Al: space

2007 Dodge

Have been using this product since I bought my truck new in 2007. Have seen an increase in mpg. Recommend the oil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mtncamp: space

10-30 oil

Been using Amsoil for around 6-8 years on my 1999 Yukon with 205,000 miles had oil tested about month ago test come back with very good results no probelms at all. The 1997 truck has Amsoil in engine and transmission pulls camper 198,000 miles no issues so far. And all my small engines has Amsoil in them also

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sergey the Welder: space

This rocks!

Use this for our 2009 VW Routan SEL Premium with 4.0L, and the van loves it! We have taken it up and down west coast numerous times without an issue!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan: space

it's all I use

I have used only AMSoil since 1982, best I have ever used.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Poppy: space

Love this oil

Love this oil. I use it in my Toyota Camry and 4Runner. Along with the dedicated amsoil oil filter it is great.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by TJ: space

I would purchase again for my Turbo Honda Civic

I use this in my Turbo Honda Civic 400+ Hp. At normal drain intervals and hasn't failed me yet excellent gas mileage and protection . Also use Amsoil Ea oil filter

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Capgoat6: space

Best Oil Always

Signature series has always held the highest protection standards for engine oil. Never an oil problem, and knowing that you are protecting the powerplant for your vehicle is so important nowadays.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cool Breeze: space

I would buy this product again and again

I have used Amsoil products on both my motorcycle (2012 Victory Cross Country Tour) and car (2007 Dodge Magnum SXT) for many years, after the initial NEW break-in of their engines. This is an excellent product that I would recommend all to use.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Stephen: space

Tried and true go to oil

This is a great fully synthetic oil that never disappoints. I love the extended change intervals that I get with this product. I can run this oil for extended drain intervals and not worry one bit due to the quality of this product.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Doug in So Cal: space

The most important thing you can do for your car.

The three most important things you can do for your car: warm it up, drive slowly as the moving parts warm up, and change the oil regularly. Since I wanted my Toyota truck to last, and I hate to change the oil, I use Amsoil. It's superior, and it only has to be changed once a year. Really! I ran fossil oil until after the engine was broken in, like 25,000 miles or so, then Amsoil for engine, trannie and differential since then. I bought my truck new in 1998, and it now has 344,000 miles on the original motor and trannie. Everyone who knows, knows Amsoil is far and away the best.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by slopoke: space

This is all I use

I have been a preferred customer since 1989. All my vehicles, Cars and Pick ups have the 10w-30 signature since new. 200K miles plus on each, and still running strong. Replaced a valve cover gasket on a 1993 Chevy 4 cyl. with 180K miles, top of cyl. head brand new with no gunk. Was using the Amsoil By-pass system with this car.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JR: space

Great Product

I have been using Amsoil on all my vehicles for a couple of years. I really enjoy the extended change intervals and the protection Amsoil provides. This is the only oil I will use. Engines seem to run a lot smoother and gas mileage has increased a bit.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jerryc: space

best oil

Using 30 wt in hour Honda Pilot as it leaks and burns the 5 wt.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hooligan: space

This stuff is Great!

Used in my well cared for 1994 subaru legacy engine with 250k miles and after only using conventional oil. Engine sounds and drives better than I can ever remember. Engine always sounded a little strained/frantic above 4.5k rpm, now sounds like lower rpm just faster. Totally happy.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by HB: space

Good Stuff

I have used Amsoil oils in my vehicles for 15 years. All of them have been 1990's or older. They keep the trucks/car running great! Not only that, but changing oil once a year is so much nicer with multiple vehicles than every 3000 miles.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Doogie: space

Only Oil I Use

Use this oil in all my personal vehicles

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joe: space

Signature Series 10W-30

I have a 2013 Hyundai Sonata. Great car. I have been using Amsoil after the first scheduled oil change and have noticed better performance, meaning the engine cranks over easier. The car runs, my opinion, a lot better. During my driving and idling with this car, I noticed that the engine has a small pinging noise. Soon after I get a recall notice in the mail from Hyundai that during the engine building process, there were small metal shavings that were not completly taken care during the the assembly of the main bearings, thus this will cause a "pinging in the engine. Huyndai will futher investigate this matter and send another notice explaining a course of remedy. I was using Amsoil 5W-20 signature series oil, and since I live in Utah and according to the owners manual I can use 10W-30. I purchased 10W-30 signature series oil and when the time came to drain and fill with oil, I put in the 10W-30. There is no pinging noise, however to be truthful, I think because of the heavier oil I have not been getting the mileage that I did with 5W-20. But i'm willing to sacrifice milieage for a heavier oil that could outlast the Hyundai problem. I highly recommend Amsiol oil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Loaded Diaper: space

Real Good Oil

This oil is used in my 675 hp BBC.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Sam: space

Only oil I'll use in the miata

I'm very picky about the oil I run in all my vehicles. I have a first generation miata with very low miles that only gets fed this oil. It comes out very useable and clean still even after about 7500 miles that I run it too which consists of a lot of very high engine speed at 4k and above.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Popo: space

Great Results

My truck is running so much better! The engine seems so much smoother.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by don't have one: space

Best Oil on the market

I don't use any other product in my vehicles, only Amsoil Baby.. if you want the best buy the best here it is Amsoil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bob: space

Not worth the hoops you have to jump through

The oil is good, but with the membership fee and high shipping costs I am going back to Mobile 1 as I did not see much if any of a difference. There is just to many hoops they make you jump through. There should just be a cost to buy it and no membership fee that AMS Oil makes people think they are locked in to buying oil from them so they can "get the most of the membership". I think most people find annoying and just go buy another oil rather than pay high prices on top of shipping and also a fee just to buy it at a reasonable price.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by DaveTheDoode: space

Your engine will run forever!!!

Using Amsoil in all my vehicles for loong years and never had engine fail!!!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Archer m: space

Signature 10w-30

I used this in my 1998 jeep Cherokee 4.0 and gained 3 pounds of oil pressure over a competitors high mileage 10w-30 overall I would highly recommend. But next time I will use the premium protection 10w-40 because the older jeep engines do have flat tappet camshafts and like extra zinc. I just bought a 1989 jeep Comanche with a renix 4.0 that had a wiped cam because lack of quality oil (not enough zinc) and I'm replacing an engine in a 1997 Jeep Wrangler 2.5 for a friend of the family because of the same reason. Great oil!!!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gary: space

Good product; I've use it for many years.

I use AMSOIL motor oils in all my vehicles, have used them for many years and consider them superior to all other motor oil brands.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Adam Delgado: space

BEST OIL

Best oils ever hands down run it in all my cars including my 331

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by old guy: space

Great

I only use Amsoil in everything i own .

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jomo Watts: space

10W-30 Synthetic

Best investment for any vehicle long term, 25,000-mile intervals for oil and filter. You save so much and the quality of the oil is far better than all I've tried!!!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ffokcaj: space

Have

By using amsoil it is saving money in the long run {less oil changes every year]ect.

]

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Five cars and one motorcycle: space

Yes I would buy again

Yes I would buy again been using this product for years about 20 years

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JACK I.: space

i run amsoil in all my vehicles

Great oil. No problems

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by John: space

Definitely buy this oil again

I use Amsoil exclusively in all my vehicles and I have do so for years. The cars include a Jaguar Vanden Plas with 136,000 miles, a Hyundai XG350 with more than 360,000 miles, and a 1990 Chevrolet Celebrity 3.1 V6 with well over half a million miles on it. None of them have ever required any significant engine work and all drive well, use almost no oil and get excellent gasoline mileage. Additionally, I use Amsoil in a restored 1932 Ford V8, again, with no problems at all. There isn't any other oil I would even consider purchasing. Obviously, I use different Amsoil in different vehicles according to specifications.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shrimp: space

Lifetime Customer

I use Amsoil in both my car and my motorcycle! Better than anything out in the market!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris: space

10W 30 Motor Oil

Great product to buy and also dependable

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BobCat: space

Very pleased with the performance of Amsoil products

I started using Amsoil Engine Oil in a higher mileage (130k) V6 and have noticed less lifter noise on startup. The oil seems to have good viscosity after 3k miles which should indicate longer oil change intervals. I also changed all fluids (diffs, trans, transfer case) over to Amsoil and have been very pleased with how the drive train feels. Of course new fluid always makes it better but it seems to coast and accelerate better than ever so I think the fluids have improved the vehicle performance slightly. At this time I haven't noticed any drastic MPG improvement but I do think there's just a little more power.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BullderBob: space

Long Time User

I use AMSOIL 10-30 Signature in 3 vehicles,,and have an AMSOIL user for over 25 years.
I use 10-30 Signature in all 3 vehicles,and AMSOIL Diesel oil in my daughters Class A motor home

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Milton: space

Oil

Love this oil it's the best

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Daniel: space

Buy al time to replace your oil

I used this oil in my cars, good performance and gas improved. I recommend 100/ I put in my Acura TSX real pure Synthetic

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Kenny: space

Works great good

I use this in my 454 big block one tone and she works hard pulling a 14000 pound trailer fantastic love it

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Stephan: space

Will buy again

Oil works great, quieter smoother running engine .

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Walter: space

This product is the best and away Amsoil

This oil I use in my trailblazer and impala

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Andrew: space

Works Good

I run this oil in a 1993 Dodge W250. This oil works great in this old truck. I am very happy with Amsoil, it is all I run in my equipment.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Howard: space

Older is better

A little thicker for an older car with many miles.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larry: space

Great oil!!

I believe synthetic oils are great for any moving metal parts. No wear, No friction, saves money in years to come and makes my engines very dependable. My Pontiac now has over 260,000 miles and uses no oil, no smoke. Thanks to Amsoil!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeremiah: space

The only Motor Oil I buy

If you were looking for the best you've found it! As simple as that!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeremiah: space

Best in the World by Far!

The most superior motor oil in world! It actually last 25,000 miles in my 2009 Toyota Venza and 2007 Chevy Malibu! When I drain it at 25,000 miles it doesn't look like its even lost its viscosity or characteristics! Best oil on the planet!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Cody: space

I am a devout amsoil fan!!

I have always loved amsoil products. I have a 2001 ss monte carlo and unknown to me that my motor had a internal coolant leak and I have used amsoil in it forever. I had put on over 200k on this motor w/leak before I developed a rod knock. I give amsoil all credit in that this engine went that long before it gave out. Love amsoil

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shane: space

Great stuff

Its great stuff use it in my 1999 Tahoe

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

Ford Pickup.

Used in my pickup along with Amsoil gear oil in the rear end and noticed an increase in fuel mileage.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Craig: space

Great product

I don't put anything else in my vehicles.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Carolina Traveller: space

I will be using this from now on in ALL my vehicles.

Learning that most "Conventional" oil lose is caused by consumption (boil off, blow by, clearances ect).
I decided to give it a try in my 340K mile Pontiac (45K on a new rebuilt 3.8l HO V6).
Not only did the oil lose stop it actually helps cool the engine down better now.
Bonny runs smoother. She has always been fast so I do not notice a performance increase.
Gas mileage improved. I was getting 17-18 mpg highway. Now I get 22-23 mpg.
I get 16 mpg city period. No improvement there. My suspicion in my lead foot has a lot to do with that.
At first consumption seemed to be the same.
Talking with the local guy he reminded me of the oil cooling lines and oil cooler underneath.
That's a full extra quart of conventional right there.
Once that boiled off (2 weeks) the oil level stayed constant.
I am on my second oil change now. New Amsoil recommended oil filter and new Signature Series 10W-30 Synthetic Motor Oil.
Funny thing was that after 15K miles it was still pretty clear.
I have 5K on her since this oil change. Still clean on the stick.
I became a preferred customer for the savings it offers me and my 9 vehicles.
Cutting the oil changes down to 1/4 of what they were makes up for perceived "extra" expenses.
the performance and stability of it makes it well worth it.
Signature Series 10W-30 Synthetic Motor Oil will be going into the Motor Home next.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by none: space

Synthetic products

When I went to all synthetic products on the motor home the transmission stopped slipping and my mileage also improved.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Roge: space

Great oil, specially for boosted cars

I've tried them all, and I was never happy entirely with the other oils. Some burned, some lost viscosity way too fast and some looked straight black just after a few thousand miles. That being said so far I'm loving Amsoil, doesn't burn, always looks clean at changes and holds viscosity. So far, signature series has been my favorite oil for my 2004 Evo 8. +1 to Amsoil I feel like I can trust it when I tracking the car or driving it around the streets.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Terry: space

Freind of mine

I actually recommended to my friend so its for him and he's been using it for years. I have been using AMSOIL products for over 38 years. I have used almost every product AMSOIL makes.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Woodsman: space

Beat This!!!!

2002 Ford Ranger, 598,898 original miles. V6.
Amsoil Filter and Oil.
Still running strong.
Dirt bikes, tractor, and 3 other vehicles,......I never used an "additive".....only fluids going in my vehicles are AMSOIL!!!!!!

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Old guy: space

I used this product because it delivers on it's promises.

I replaced a leading brand with Amsoil because genuine lab tests demonstrated superior performance in our hot climate. It ,as a bonus stay's cleaner longer in my motorcycle and high performance boat and car engines than other synthetics and petroleum based oils, which makes for far less combustion made carbon and fuel contamination, the two main engine damaging agents that accumulate in the crankcase..

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by none: space

Synthetic products

When I went to all synthetic products on the motor home the transmission stopped slipping and my mileage also improved.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ryan: space

Best oil as usual

Bought this product for my lawn mower. Was a great replacement to regular oil. Performs great. Experiencing easier starts and more quiet performance. Exactly what I was expecting from amsoil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by H: space

I've used this oil , it's the best on the market

I use this oil from the 1st oil change 282,576 miles ago. No problem with the engine, it just goes and goes. We drive the car daily and for long distance and I never worry about the engine. I fully trust Amsoil.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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Reviewed by Liz: space

My 2003 Jeep Liberty loves this

Smooth & starts well in all temperatures. thanks.

Item Reviewed: SAE 10W-30 Signature Series Synthetic Motor Oil (ATM)
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