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 Randy: 
I use this in my 1990 Chevy C1500 SS454 which doesn't get driven often less than 800 miles a year, so even though it sits a lot I know my engine is protected
Reviewed by squire:
This less expensive Amsoil Is my choice for a quality shorter term service interval for some of my vehicles .
Reviewed by Big Jim:
I put this oil in my 2016 Ram 2500 6.7 Cummins on its 3rd oil change. I noticed a slight mpg increase. The engine actually sounds a bit quieter as well.
Reviewed by Fred:
Regular on time maintenance
Reviewed by Alex:
I use this oil for a sport car and its amazing
Reviewed by Aasim:
I have a small home garage where I help my friends and family members on part time basis. I use most of the AMSOIL products and have seen good results.
Reviewed by TB:
Us AMSOIL in all our vehcles, we live in the hot desert and can really tell a difference. Will never use anything else!
Reviewed by Uncle Sam:
Use in all my vehicles as well as my motor trike, all the amsoil products.
Reviewed by Biker:
Never had a problem with amsoil
Reviewed by Troy:
Have been using the oil for a long time and very happy with it
Reviewed by Matt:
I have been using this oil in all my cars for many years..
Reviewed by Pete:
I've been a loyal AMSOIL Client & desler for years!! All my. Vehicles get converted to synthetic.. first the engine, then the drivetrain.. trany always a challenge.. but well worth it.. one of my trucks had 215k on it.. accident took it out but kept the engine & drivetrain.. thanks AMSOIL!!
Reviewed by Thor:
Overall this is a great product for a lower price. However the difference in price is worth going up to the XL oil, twice the oil life for only a dollar or so more.
Reviewed by Mr. Mike:
I had always purchased the top-line signature-series for my cars and trucks in order to take advantage of their long drain intervals.
Recently I bought a new midsize truck with a V6 engine.
The dealer offers a free one-million-mile powertrain warranty to the first owner. Owner must follow the factory-recommended service intervals; oil drain and filter come every 5,000 miles.
I went with OE because it has to be drained so often, but would it provide about the same protection and mileage as the SS? Before OE the mileage average was 23.4 mpg. After 5,000 miles on OE the mileage average is 24.3, an increase of about 9%. The engine is very quiet at idle and runs very strong. No oil seeping anywhere.
Reviewed by Simi:
I use this oil in my 2006 Acura MDX. My gas mileage has increased and my SUV runs really smooth. I used the Engine Flush before installing. I feel confident that using a premium product at a great price point from a company like Amsoil will keep my MDX running for a very long time.
Reviewed by Noble Lumpkin:
Using it in an engine that burns oil. It is more affordable that the signature oil but still quiets down valvetrain and runs smooth.
Reviewed by CK:
Owning an air-cooled Harley and a Subaru with leaking head gaskets, I can't really afford to take chances with oil. AMSOil is competitively priced and in some cases, less expensive (see Motorcraft gear oil vs AMSOil)
Reviewed by GeekBoy:
I have been using this in F-150's for over 4 years and have been nothing short of impressed by this oil. I have also put this oil in a lot of other vehicles and never any complaints.
Reviewed by RC:
Have been using this product in our 2007 Tahoe with a 5.3, and my 2012 Chev. 2500 with a 6.0 liter gas engine. Very particular about everything, Watch for new leaks, old seeps, consumption, color, smell, everything. Tahoe has 80,000 miles, PU has 60,000 miles. Tahoe has had a slight seepage around rear main area and also had started using a quart of oil in 3,800 miles after every oil change at about 30,000 miles. Since switching to AMSOIL, seepage has just about completely stopped, and consumption has slowed to approx. 1/2 quart at 3,800 miles after about a year and a half of usage and 3 oil changes at 4,000 miles. Hoping for continued improvement with time and miles. PU has never used a drop or leaked a drop between changes. Have always used Valvoline products prior to trying AMSOIL. Still watching results and hoping for the best. Also put 50 wt. SYN. AMSOIL in my '80 diesel truck transmission and saw easier, faster shifting, and less noise. No leaks.
Reviewed by Gerald:
Using this oil in all my autos with 15,000 mile filter. Saving me lots of money.
Reviewed by Scott:
What is not good about amsoil product? I use amsiol in everything I own.
Reviewed by DEREK:
I use this product in my 05 Toyota Sequoia. Started using Amsoil at 125k miles and haven't looked back.(178k) I am very pleased each time I change my oil to see how clean and gold the oil is. Before Amsoil, the oil would be black with deposits. I know my engines' life is extended due to this product.
Reviewed by Brian:
I love the OE Amsoil products. I use the OE 5W-30 in both of my GM vehicles, a 2001 Silverado with 256k miles and a 2011 Cadillac with 96k miles. I love the feeling of protecting my engine with quality oil.
Reviewed by Michel:
Firts excuse my English i'm french Canadian,I appreciate your products for my bike and truck. Hope to do business again .
Reviewed by Joe HEMI:
I've used XL oil for years because of the miles I put on my truck, even the shop is amazed at the engines condition after 150K, so I started with OE on my wife's suv with 120K miles & it seems to run smoother then ever.
Canada
United States
Been a great product.
Use these products in all my vehicles from my sports car to my fault driver and my toys. Never an issues and great prices, except filters but I work in a shop and we get great deals from our local parts stores so it's hard to compair.