Customer Ratings & Reviews

Use this oil in my 1993 Corvette. Slightly modified. Have been using this oil since 2010 with no issues, car runs excellent. I believe this product saved my engine when a power wire disconnected from my electric water pump. Engine temp got to 245F (glycol temp) before I shut down the engine. Surely the crank was much warmer than that. Oil was slightly discoloured. Changed oil as precaution but no damage to engine. Just over 126000 miles on engine.

I have been using this oil and the recommended filter in my last 4 vehicles. I have changed the oil & filter at 25,000 miles or 1 yr. I have kept the vehicles for at least 200,000 miles and have not had any oil related problems. I drive about 28,000 miles per year.

I use Amsoil on all my vehicles and equipment

I have Amsoil in everything I own. I've used it for over 20 years. Why would anyone not use Amsoil? I use it in cars,trucks,diesel trucks,motorcycles,lawn mowers and all my hand held lawn equipment. It's the Best protection money can buy for your lubrication needs. I've convinced many of my friends over the years to switch to Amsoil.

Use mainly in class 8 trucks, expensive but good product I believe

I drive 200/300 miles per day, Before amsoil I was changing oil every two weeks.now twice a year, That's awesome, My last 3 cars have had 200k to 340k. Not a single oil related issue! Thanks

wouldn't use any other brand of oil, saves gas, increases oil pressure,with a longer engine life. Thank You Amsoil

Have been using amsoil since I could drive a car and will continue to keep using it

once a year oil changes whats better than that

Have used Amsoil exclusively on all our vehicles! Extreme cold winters do not take its toll as with other products. Of course now we use Amsoil in lawnmowers, leaf blower, snow blower and in our 1973 Deutz farm tractor. We have a lot of $ money in our vehicles and this is our way of protecting our investments !

Great oil. Used in all of my vehicles. Long drain intervals. Will continue to use!

I've been using Amsoil in all my engines. Am certified ASE Technician. I love the 25k oil and filter. Only have to change my oil once a year. I am money ahead for several reasons 1) cost. 2) time. 3) my engine and seals are in better condition with Amsoil. The molucules are consistent size and fit into tight tolerances.

All Signature Series Oils and Ea0 Filters are the very best ever created.

I'm impressed

Great oil. Holds up really well in my turbo Civic - confirmed by UOA.

I use only Amsoil in every engine I own. My F150, the wife's Lincoln, the Harley, The Boss Hoss, My Shelby, My vintage Ford tractor (Z-Rod)The Toro zero turn My 1981 Briggs and Straton edger and anything else that stops by my home.

I have used this oil for 4 years now in my 2005 F150. Each December I change the oil myself and send samples to Blackstone Labs for analysis. Each time it has come back, saying I can extend my oil changes another 5K+ miles because the TBN is great. Has always been over 2. The most I have driven in any 1 year period before changing oil was 14K miles. I'm impressed.

I use it in all my gas powered vehicles

The new formula is working out very well in our ecoboost applications.

As a do it yourself auto maintenance gear head, I value the peace of mind knowing I am using the best oil available for extended drain intervals.