Product Reviewed: Signature Series Motor Oils
Current Rating: 4.95 out of 5 stars
Votes & Reviews: 529 vote(s) and 1218 user reviews.
Reviewed by Luis: 
This oil is just the best of the best. Proven quality on any test out there, this oil will help your vehicle engine perform to its potential. A plus!!
Reviewed by Vincent:
Another great product love amsoil
Reviewed by Richard:
I use this in a supercharged hi performance vehicle. It gets worked hard. When I change the oil you'd never know.
Reviewed by Mary:
Amsoil is the best. That is why you should always get it if you want your car to take care of you
Reviewed by Colin:
What can I say? I bought it for a friend with a hi performance engine. I've used Amsoil engine oils for over 35 years. Always had great longevity and reliability every time.
Reviewed by William:
Excellent oil. I have used it for years without an issue.
Reviewed by Paul:
I replaced the enfine and granny in my car over a year ago. The oil and tranny fluid have done fine since. I'm pleased with this product.
Reviewed by Marcus:
Personal use on 2012 WRX, with 90k miles.
Reviewed by Sengsy:
For my new car, It is running much smoother receiving more MPGs than OEM oils and/or even the best over the counter motor oils. Thanks!
Reviewed by Sengsy:
The best of the best oils i only use...Amsoil! Thanks!
Reviewed by Jim:
I have used this oil for 203,000 miles since my FJ Cruiser was new. It is the best!
Reviewed by Harry:
my Subaru forester says thank you and purring along for nine years could not be a happier person.
Reviewed by Steve:
Great oil glad I made the switch.
Reviewed by Steven:
I use Amsoil in my 4 vehicles and ZTR mower. It's the best.
Reviewed by Nicholas:
Amsoil is the only oil that has consistently been able to withstand the unbelievable abuse I put my engine through.
Reviewed by Terrance:
Have used this product in my wife's Subaru Crosstrek since new in 2014. It has worked flawlessly ever since. I wouldn't use anything but Amsoil in my wife's car as she has to travel through desolate territory just to get to and from work. I absolutely need it to be there for her. It does the job great.
Reviewed by Roberto:
Good product
Reviewed by Alexander:
I am using this oil lately and I am very satisfied with it. Usually I change it every year but I didn't exceed 9500 miles. Engine is running smooth and quiet. Thanks.
Reviewed by Mac:
Use in all my late model cars
Reviewed by MARK:
I buy this oil all the time! Every oil change! I have used all the brands over many years and Amsoil is my preferred!! I have put 150k miles on my Tundra using this oil and it's runs like new!
Reviewed by William:
Never had an issue in the vehicles we use this in. I have an 08 grand caravan, 16 Chevy Cruze, and a 16 Nissan NV 12-passenger.
Reviewed by Quoc:
The best oil I have used by far
Reviewed by Joel:
Almost 200,00 miles on a 5 cylinder motor and it still runs great, started running amsoil at 2000 miles
Reviewed by Bob:
I use your products because I trust them.
Reviewed by William:
I love this oil and will never use anything else again. The motor runs so much stronger and we picked up three miles per gallon.
Reviewed by Chad:
It is what the car manufacture calls for, and we have had no problems with just changing the oil once a year. We now have over 50,000 miles on the SUV, and it averages better fuel economy than what the EPA rates it at.
Reviewed by Michael:
I use this in our 2000 4Runner, which we use to pull our camper during the summer. It gets a real workout in the Colorado mountains, and the signature series has been great at protecting the V6 engine from high stress and heat.
Reviewed by Joe:
Great product
Reviewed by Janno:
Best synthetic oil on the planet.
Reviewed by Bryan:
I use this superior product in my 2013 f150 Coyote 5.0l, very proud to use Amsoil for every piece of equipment I own!!!!
Reviewed by Julio:
AMSOIL oils something to trust
Reviewed by Bruce:
Love this oil for our GDI turbo engine
Reviewed by Steve:
4,500 miles and have not burned a drop of oil. Engine runs a little cooler than with other oils.
Reviewed by Corbett:
Best 100%
synthetic engine oil ever.
I use in my entire automotive fleet year
round. Superior hot and cold weather performance. On and off road.
C.
Edmonton, Alberta.
Reviewed by Charles:
Motor oil is the cheapest mechanic you will ever pay! Why not use the best you can buy?
Reviewed by Charles:
I use 5W50 in my Mustang GT. I have been using Signature Series motor oil in all my vehicles for many years with excellent results. I change my oil at 15,000 mile intervals which works out to about once per year.
Reviewed by Viacheslav:
Best oil ever, keep using it for the last 10 years. Definitely will buy again!
Reviewed by James:
I have been using Amsoil in my truck(s) for almost 10 years now and I love it! Mileage went up when I switched to Amsoil and my truck runs great. Best of all is the intervals between oil changes.
Reviewed by
Michael:
I have been using Amsoil 0-20 synthetic oil and the recommended filter in my 2008 Toyota Tundra since mileage hit 5000, now has 63,000 miles. I change the oil every 8000 miles and each time the oil is clean and looks almost new. No smoke and no problems.
Reviewed by Steve:
I have used this oil for years in multiple vehicles. Couldn't be happier.
Reviewed by Dan:
It's just good to know that you have the very best product in your vehicle. If you have to run over your mileage limit or run your baby a little harder than most people it's just good to know you have the very best protection.
Reviewed by James:
A+
Reviewed by Roger:
Have no problems with any vehicle that I use the oil in.
Really wish you still made your rust proofing.
Reviewed by Steven:
I have been exclusively using Amsoil since 1984 because of it's extended drain intervals and premium quality. It is the best synthetic oil product available.
Reviewed by Jesus:
Excellent
Reviewed by Adan:
Did the job, truck runs really good/Better than it did with rotella. I'm surprised with results.
Reviewed by Todd:
Have used amsoil for 15 plus years. Wouldn't change back to any other oil!
Reviewed by Adam:
Helps me go longer without changing oil as often since I drive 150 miles a day for work.
Reviewed by Michael:
Truly last 25k or 1 year with out a oil change, remarkable. Three years strong, keep up the good work.
Reviewed by Scott:
Been using AMSOIL lubricants in everything I can get it in since 1985. Have never had any issues. Used it in my 1983 Ranger that I bought new up thru and including my new 2010 MKZ, 2015 F-150 Lariat and 2016 Fusion. Best in the business and cheap insurance for everything I own.
Reviewed by Robert:
Superb Motor oil. My Elantra has the best.
Reviewed by John:
Great product. Got what I ordered on time. No hassle.
Reviewed by Ron:
Use this in my new engine on my 2001 Jeep tj great stuff 👍👍
Reviewed by Jim:
great product !
Reviewed by Larry:
The best for my vehicle
Reviewed by Patrick:
I have been using Amsoil products in my vehicles for a long time and I will use nothing else in them!!
Reviewed by William:
The only oil my car is going to see for the rest of it's life!!
Reviewed by William:
The only oil my car is going to see for the rest of it's life!!
Reviewed by Craig:
I use this in my Grand Cherokee
Reviewed by Mark:
Been using amsoil in allmy vehicles for years works great
Reviewed by Carlos:
Rxcellent!!!
Reviewed by Jaime:
Best synthetic oil I've ever used. Makes engine run smoother and quieter.
Reviewed by Jaime:
Best synthetic oil I've ever used. It makes the engine run smoother and quieter.
Reviewed by William:
Mopar or no car! Amsoil or no Oil!
Reviewed by Austin:
Best oil out there. 3rd party testing to prove it. I'll choose amsoil everytime.
Reviewed by David:
Have used now for many years in all my vehicles! BUT the cost is getting to be too high!!
Reviewed by John:
I use this oil exclusively in my vehicle. Never a complaint. Completely comfortable with it
Reviewed by Sammy:
Been using AMSOIL products for over 20 years!
Reviewed by Robert:
THEE VERY BEST.
Reviewed by Keith:
I use in my 2007 Jeep Liberty. I change every 12K miles.
Reviewed by Ed:
NO TROUBLE TRANSACTION
Reviewed by
Everett:
Been running this oil in my 2007 Ford F150 since about 36,000 miles. Now has 317,566 and still going strong. Love the protection, changed every 15,000 with Amsoil filter as well.
Reviewed by Marc:
I swear by amsoil products. I've been using them for many years. Greatest on earth. And the company makes it so easy for you to deal with. Will never stop using their products.
Reviewed by Duane:
I use Amsoil in my three vehicles and in my 2001 Road King. In all of these years, never an engine or wear problem.
Reviewed by Jim:
Best product out there.
Reviewed by Joey:
It's the first time I've used Amsoil in my 5.0 F-150, so far so good, my fuel mileage increased, truck seems to have a lil more pep to it!
Reviewed by Ruben:
Best oil I've used by far! Been great for the F150 Ecoboost and haven't had turbo or timing chain issues because of it!
Reviewed by Steven:
Best product on the market. I love it.
Reviewed by Ron:
I have been using this oil for years! It's a great product. I won't use any other oil.
Reviewed by Danny:
Best oil on the market
Reviewed by Alejandro:
Awesome product.... Thanks....
Reviewed by William:
i believe signature series oils from amsoil are among the best you can get. i trust amsoil in everything i own. i don't feel i need to research every product for every piece of equipment, just get amsoil for it
Reviewed by Lee:
I've been using signatures TVs engine oil for the past three years I have no problem .Is the best all on the market right now and if you need your engine to lass use this oil
Reviewed by Michael:
AMSOIL signature series is awesome we also use the AMSOIL oil filter also and highly recommend these products to anyone wanting to save some money by not having to change your oil as often. We used it on our Ford Escape and at 150000 miles it was as smooth and quiet as it was new and still no oil consumption between the extended oil changes unfortunately it was totaled when a person ran a stop sign.
Reviewed by 2ManyToys:
Our truck is a 2001 Ford Expedition that we purchased new. Eighteen years later, we have never had to do any internal engine work. This is a daily driver that we can take cross country. I wouldn't use anything else!
Reviewed by Everett:
Best oil you can run period, especially in a turbo charged engine.
Reviewed by Brian:
I learned about Amsoil when I was stationed down in Arizona I've been using it now for 15 years straight and I will never go back to regular oil. I have since retired from the military but I will not retire using this product.
Reviewed by Nancy:
AMSOIL oil is all I will put in my cars. I want the peace of mind knowing my cars are protected by quality products.
Reviewed by Nancy:
All my cars are older and I feel secure with this oil protecting my car.
Reviewed by Nancy:
Love not changing the oil so often since I am a busy Grandmother. Knowing the oil is protecting my car.
Reviewed by Matthew:
Changed my 6.0 over to this oil. Starts much easier in the cold
Reviewed by Myles:
I use this in my 2010 Tundra, and don't worry about the engine at all!
Reviewed by Myles:
I use this in my 1991 Lexus with over 400,000 kms and this car is still
going strong. Never an issue with the engine itself. I don't think there
is a better oil in today's marketplace.
Reviewed by Larry:
Have been along time user of Amsoil products , never had a problem with any of the products. I have three high performance vehicles and use everything from oil and filters to brake fluid from Amsoil.
Reviewed by Cameron:
Good stuff smooth out my engine
Reviewed by Shawn:
It works great. My Jeep runs smoothly past 6000 miles
Reviewed by Bill:
They did synthetic first. It was the best then and still is. If you're going to keep your truck or car for years it's worth every penny.
Reviewed by Christian:
Amazing
Reviewed by Valentine:
Replaced the eng oil with Amsoil. I could tell a difference from the get go. Amsoil is good stuff.
Have a Subbie TX with a Turbo, this is the only oil I will ever use in this Subbie.
Canada
United States
Amazing oil
Best oil iv ran so far the car continues to run super smooth even with a couple days at the strip