Product Reviewed: AMSOIL OE 5W-30 Synthetic Motor Oil (OEF)
Current Rating: 4.95 out of 5 stars
Votes & Reviews: 84 vote(s) and 226 user reviews.
Reviewed by Joe rex: 
This was the first use of amsoil and I will say that it does not disappear like the Royal purple does that I was using. I love the amsoil products and will continue to use everything that they have.
Reviewed by Bryan:
100% synthetic, American made, what else can I say, love it!!!
Reviewed by JAML:
Great OEM alternative
Reviewed by Majwood:
I have used this oil in each of my vehicles for years and have experienced increased mileage and reduced oil consumption.
Reviewed by Ondrew:
Great stuff
Reviewed by ZZ:
I ordered this oil for my younger brother and he was amazed at the noticeable performance gain and fuel mileage, and the oil breaks down much less oil stays looking new for longer.
Reviewed by Kyost:
My engine has not croaked yet! I've noticed on cold mornings my Durango starts with no knocking compared to the oil we used to use. My 96 GMC seems to run smoother also.
Reviewed by CM:
Have been use their motorcycle oil for many years. Recently had some engine work done on it and the mechanic couldn't believe how clean everything was. So now using it in new truck.
Reviewed by Bill:
Excellent oil based on science technology and testing, not based on false advertising but robust additive packages high quality base stock
Reviewed by Lee:
I use Amsoil in all my vehicles and toys.
Reviewed by Eddie:
I have put over 300,000 miles on more than one GMC...GREAT products. Still use all AMSOIL products, from grease to Oil.
Reviewed by John:
Have used amsoil for years. Leader in the industry. If you love your vehicle or rely on it heavily then you should use their oil
Reviewed by Yoda:
AMSOIL Signature provides outstanding protection for my engine. Moreover, with Amsoil oil, I only need to change my oil once a year.
Reviewed by Hollywood:
Use this in my wife's Dodge Caravan, awesome product.
Reviewed by mikem:
best oil on the market
Reviewed by Runner:
I've used this oil many years, it's a great product as well as other AMSOIL products.
Reviewed by Runner:
I've used AMSOIL for many years. It's a great product.
Reviewed by Mike:
I used this oil in my 2006 Acura RSX since I bought it 6 years ago. It had 35,000 miles on it then now it has 187,000 miles. Still runs like new same power, uses no oil. And when I change the oil it still looks fine.
Reviewed by Bstill48:
Very impressed with the oil. I was. Mobil1 fan. Not anymore. I got better fuel mileage and didn't burn any oil like I did with the other product.
Reviewed by John:
Great oil cheap price run it in two vehicle noticed a difference in my car it used to have a ticking sound and with the amsoil it stopped ticking . I used to run different synthetics in this car before amsoil and they were fine but the car started ticking after about 3000 km with amsoil it didnt tick at all so its gotta be one good oil . Also all my power equipment and toys run amsoil
Reviewed by John 5.0:
If you love your vehicle this is the only oil to use. With oil being the life blood of your vehicle choose Amsoil. Best quality oil hands down. For 7k revs on my supercharged engine to my lawnmower. Nothing is better!
Reviewed by Chappy:
I trust Amsoil and put it my 2016 Ford F150. I got a little over 10,000 miles when the message to change the oil came on in the truck. I also use a Motorcraft oil filter and change At every oil change.
Reviewed by rodney:
Love amsoil products and I don't use anything else
Reviewed by ex535xi:
Using this in 15 Ford Focus. Wouldn't think of using any other products. Amsoil #1 !
Reviewed by Indian Ryder:
Use in my Dodge Ram 1500 with 175k and no issues at all
Reviewed by Pawel:
I use this oil for all my cars. Great for cold starts on super cold days and good for hot operation.
Reviewed by GregM784:
I trust my 300000 mile daily driver to it religiously. AMSOIL of some type goes in everything i own.
Reviewed by CatDawg:
I use this on both my car and my truck.
Reviewed by Simon:
This product, just like the signature series delivers on the promess and claims it makes. My 2014 Fusion and Escape rely on this oil for protection and it works.
Reviewed by Rick:
Used this product for years. Never had any issues
Reviewed by Josh:
Best oil that money can buy, I will definitely be an AMSOIL customer for life.
Reviewed by Jeff:
I use this in an older Z71 truck that has the 5.3 V-8 engine with 200k miles and most of these engines have lifter slap for a few seconds after start up but with this oil it doesn't seem to take as long for the slap to quit.
Reviewed by Brandon:
I started using Amsoil when I didn't have a garage so I wouldn't have to change oil out in the cold.
These days I use the OE oils and just change oil when the maintenance minder says to.
Too soon to tell how this is protecting the engine. Ask me in about 10 years or
a couple hundred thousand miles.
Reviewed by Mike7ac:
Newer vehicles
Reviewed by DERWOOD:
GREAT OIL ALWAYS HAS BEEN NEVER HAD ANY PROBLEMS
Reviewed by Josh:
I use this oil for our daily driven family car and it has worked great. I've used it almost since we got the vehicle so looking forward to seeing the long term benefits Amsoil is known for. I also purchased because I don't necessarily need long interval oil like signature series as well as more mileage. We use the car maybe 10k kms a year at most. Also, Its cheaper for this full synthetic than buying at a parts house locally. It in many cases is the same or cheaper than semi-synthetics. Great stuff.
Reviewed by Cummins Fever:
I like the Amsoil 5w30 because of its high quality and because of the money I save from not having to change my oil every 3,000 miles.
Reviewed by Cummins Fever:
I like the Amsoil 5w20 because of its high quality and because of the money I save from not having to change my oil every 3,000 miles.
Reviewed by camaroman:
I used this in my 2010 Camaro RS 6CYL. I believe that amsoil makes a quality product. I also use their Z-Rod 10w40 oil in my Dune Buggy which has an air cooled motor in it. Again quality counts !!! So far I have nothing bad to say about their products. I would recommend it.
Reviewed by Jay:
I've been using Amsoil fir s few years and it is such a great product. Mileage increased after my first oil change in my Jeep I recently purchase and this was the first oil clange with Amsoil .
Reviewed by Derek:
I've been using this in my 2015 Nissan Versa for over 30k miles. I drive a lot for work and Atlanta traffic can be pretty unforgiving. Since using AMSOIL, I've had zero issues with my car in traffic and on the highway. I'd absolutely recommend this product to anyone considering switching to synthetic oil.
Reviewed by Vince:
Amsoil makes great products! I use this oil in a 2017 Ford Explorer xlt 3.5 NA. It runs very smooth. Keep up the great oils Amsoil!
Reviewed by Mac:
I've used the OE line of Amsoil in a handful of vehicles now. When I've disassembled Motors that had Amsoil the internals are spotless. I've never seen crud buildup in the oil pans when using Amsoil oil and at intervals the oil always seemed cleaner than other brands. I always pair this oil up with an amsoil ea oil filter.
Reviewed by Wyatt:
If it's from Amsoil I trust the product. Yes, a bit expensive at times, but the value gained from using the products in my opinion makes it worth the cost.
Reviewed by GB:
this is great stuff. Only 3 stars because the price is a little high and its very hard to find in stores.
Reviewed by Adam:
I have used AMS oil for 7 years now since I found it and I'll never go to another! Have put in motors with 400,000 miles and cars with 16 miles! No substitute
Reviewed by Jordon:
Fantastic quality oil. Easy on the wallet . Don't let the OE name fool you into thinking this a low grade product. This oil has been tested just as good , if not better than the other popular hydrocracked group 3 base stock synthetics on the market. This is perfect for daily driver vehicles . Be sure to match with a high quality oil filter made for synthetic oil . Remember your oil is only as good as the filter you use with it .
Reviewed by Al:
I have a truck with 295k on it, and still running strong. Thank you Amsoil.
Reviewed by EJ:
High quality oil and will the membership its cheaper than buying in local stores than any other full synthetic oil
Reviewed by Howd55:
Knowing you have the best protection in the world market and on going research to improve and create new products.
Reviewed by Ford F-150 man:
I've been using this
oil since truck new.. I am averaging 12.2L /100 km...
Not bad for a 5.0L
Reviewed by Utex99:
I've been using Amsoil for around 6 years now and I've never had a complaint about their oils or their customer support. I use their oils in 2 Harley's, 2 Ram trucks (gas and diesel) and 1 Jeep and couldn't be happier with how smooth they all run and the level of great customer service I get when placing the orders.
I honestly believe all oils are good, but I feel that Amsoil is the best - hands down. Vehicles are expensive to replace, so even the best oil, whatever you think it is, is cheap insurance.
Reviewed by dave:
I have a 2004 honda civic ex with 120000 miles on it. Replace So far with 1000 miles with oil. Car is running great. With the hot ny summer18. The car is running cool and no loose of power its a big plus that when i order it. Its arrives quick at my door step
Reviewed by Stretch:
Been using Amsoil products for a few years now. Four different cars a Harley a lawn tractor a various small engines. I put a lot of miles on my car for my job and really need to rely on it. Everytime I do an oil change I'm reminded just how good this product is. The oil still has a nice color to it. It's not that black sludge you get from conventional oil.
Reviewed by Bruno:
My daughter's 16 and she noticed the difference in her Honda civic. I now use Amsoil in all of my vehicles.
Reviewed by rick the lazy:
I got so sick of changing the oil on my 4 vehicles every 3k miles that I finally tried Amsoil and boy am I glad that I did. Great stuff and now I only have 4 oil changes/yr instead of 12!l Oh, did I mention that it is also cost effective?
Reviewed by Love the cold:
Like the free shipping and appreciate the kits with oil and filter included. Prefer the eao filter don't like WIX.
Reviewed by Jack:
I have been using this oil in my 2011 F-150 3.5L V-6 Eco Boost engine and it seems to be doing a good job for what it is intended.
Reviewed by David:
It works I really have nothing to compare it to
Reviewed by PS:
This oil is a great replacement for the manufactures recommendations and it is a higher quality oil.
Reviewed by Jay:
I am not a chemist or engineer, so I cannot speak as to what's inside the bottle. However I am a mechanic and can speak as to what's inside a engine, transmission or differential. I've used Amsoil on and off over the years alone with other bands of synthetic and conventional oils. I've never used anything that didn't work. However, I've found good oils last longer. Being a fleet mechanic I change a lot of oil and get to see what it looks like under abuse. Amsoil always holds up. That's why I use it.
Reviewed by Gfarmer:
Best oil I've used. I was looking for a good European synthetic.
Reviewed by Chris:
I have been using 0W20 in my 2014 Mitsubishi Outlander since it was new. I have noticed no loss in power or performance and my dealer comments on how clean my engine is!
Reviewed by Derek:
Seems like good oil; we'll see, when the odometer turns 400k.
Reviewed by Wayne:
Keeps my truck running smooth and strong. Won't use anything but amsoil
Reviewed by Torq:
I ran a purple brand for 10 years. I've always heard good things about Amsoil so after feeling like the product quality of my previous brand was going downhill I decided to try it out. As a preferred customer I can get Amsoil cheaper than my previous brand. My truck runs smoother with less engine noise. Great product with superior performance!
Reviewed by bob:
use I 2 Tacomas
Reviewed by Todd:
I use Amsoil motor oil in both of my vehicles and I use Amsoil oil 20-50 for my Harley.Excellent product tons of research done without a doubt the top of the oil food chain.
Reviewed by Josh:
I love this oil. For the quality it is super great priced. They have wonderful fast shipping and they have a product for all of my vehicles even the old ones. I use this oil in all of my vehicles.
Reviewed by Fernando:
Great product my vehicle runs great
Reviewed by tJ:
I use it in my daily (2018 Jeep compass) and my project trucks (98 ram and 83 s10)
Reviewed by Super D:
I have tried many types of oils and read a ton of reviews, which can be hard to decipher with everyone giving their personal comments and feelings. But hands-down without a doubt Amsoil is the best product out there, tested over and over again. I know this is the only oil I will trust in my vehicles.
Now, I wish Amsoil will create their own waterless radiator fluid so that everyone will enjoy all the fluids in their cars are coming from a
trusted source.
Reviewed by Deb:
This is just one of Amsoil products that I use. I have used Amsoil synthetic oil for 20 years, and every time I get a new or used vehicle, I waste no time in switching the crankcase to Amsoil. I have 267,000 miles on my 2005 Camry, used Amsoil since it had 300 miles on the speedo, and it's still purring like a kitten and not burning oil. I am a very satisfied customer.
Reviewed by Ben m.:
So far so good. Ben 3k miles since change. Oil still looks clean clear and new.
Reviewed by Deutsch-Texanischer Jagdclub:
I have used other oils but was sold on Amsoil after a cross country trip where unbeknownst to me all the coolant leaked out of my vehicle. I never noticed because my engine never got hot. I drove all the way through the Great Smokey Mountains and hot Texas heat without my diesel engine ever getting hot even though I was towing a trailer. Great Stuff. Thats the kind of performance I like.
Reviewed by Jim:
I run this in my Jeep JK. The Jeep runs smooth, quiet and cool. It's a comfort thing knowing I'm protecting my engine with Amsoil.
Reviewed by Doc Pat:
I use this oil in my wife's 2004 Tahoe. Works great.
Reviewed by Jimmy Neutron:
I have a 2009 ZO6 Corvette that is notoriously hard on oil, however the Amsoil is standing up to the abuse, and has also lowered operating temperatures by 6 degrees. Very happy so far.....
Reviewed by Yoda:
Better than regular synthetics. With the Preferred Customer discount, it works out to slightly less expensive than the store bought brands.
Reviewed by JJ:
i run this in my truck! won't put any other oil in it!
Reviewed by Larry's stuff:
This is the perfect oil for my mother-in-law's van!
Reviewed by Lonnie:
Seems to be a great product
Reviewed by K903:
I run this oil in my wife's daily driver, she's hard on a vehicle not to mention the hot environment here in Florida. While doing some minor engine work I noticed just how clean the internals were thanks to Amsoil.
Reviewed by N2MXM:
Use it in everything I own. Great stuuff
Reviewed by Elk:
I use Amsoil on my 2 cars and my deisel boat. I've never had a reason to question its performance. So far, so good.
Reviewed by Cmart:
Used this oil for several years now in both my work truck and personal vehicle.
Reviewed by Eric:
I run Amsoil in my truck and in a buddies truck. On both vehicles we have seen improved fuel economy and better cold starts. The truck has no issues starting in -30°f and below even when left unplugged over night. I have seen increases all over the board.
Reviewed by Petes:
Use Amsoil in all my cars and motorcycles because I insist on only the best !!!
Reviewed by Beetle:
I change oil in my trucks every 5000 miles easy pour from container everyone should use nothing but amsoil prouducts
Reviewed by Eman:
I use this oil in all my cars, it's cheaper than in stores with preferred customer membership, quality product and protects my vehicles for years now.
Reviewed by Thetorque:
I purchased this for my dad to use in his 2007 Chevy cobalt. Provided an upgrade from conventional oils. The oil life monitoring system was at 27% remaining oil life when we changed it at 4,000 miles.
We have started using Amsoil XL to provide better fuel economy.
Reviewed by Walleye Warrior:
Years ago I use to race & rebuild our engines. Rod bearings and piston rings would wear and need to be replaced quite often. Once I converted to 100% synthetic Amsoil oil I could run a full season on the same bearings and piston rings, savings in $$ and time replacing rings and bearings. Virtually NO wear on moving parts. This proved to me how valuable the oil is and I now run 100% synthetic Amsoil in all my internal combustion engines.
Reviewed by
Peewee:
No down time
Reviewed by Kl:
I don't quite drive enough to utilize the full drain interval of this product. I do run the product for the calendar year. The oil remand stable and clean from visual inspection. I have total confidence in this product.
Reviewed by Johnny the GS MAN:
I purchase this for all of my customers who are skeptical of AMSOIL. I tell them to compare to MOBIL1 when they do their 3k or 5k mile oil change. The color is always lighter than MOBIL1 in all the cars I have tested!
Reviewed by MexiNugget:
Use this across in my 2 Toyota's and Lexus vehicles due to the extended warranty requires 3k oil change be done regularly. My son ran the '99 Camry with 230k miles down to 1.5 quarts once and I just topped off and no harm seems to be done to the engine after another 2k on the motor.
Reviewed by Sonny:
I appreciate your product. It works well with my Nissan frontier and pathfinder and could feel the difference.
Reviewed by Kyle:
Great oil! 210,000 miles and still going strong.
Reviewed by Mattamer:
Have used this in my truck for several years. Great product would recommend it
Canada
United States
I would and will keep buying Amsoil
I use Amsoil in my every day Acura and I use it in my track toy Honda. You can't beat the protection Amsoil gives you no matter what you're using it for.