Customer Ratings & Reviews

After gathering all information by independent testers, I believe this is the best oil in the market. Love my car, so this is my motor oil.

Best oil you can buy

Recently bought a new Acura 2019 RDX needed a top quality oil‘s especially since this thing has close to 300 hp and has a turbo. I believe this oil handles the heat and keeps the engine clean direct injection motors need to be kept clean this oil fits the bill!! Highly recommend it!!

Long-time user with great results!

The first time I used this oil in my car I felt a noticeable difference from the other oil I was using the engine seem to have a little more power.

"CVT" timing transitions seems smoother! Also start up shifting is easier!

I used amsoil for mitsubishi lancer before so I'll used it again for my subaru. I will recommend this oil for every commuter out there.

Have been using for years. I took me a while to break the habit of changing oil every 3,000 miles. Upon the use of AMSOIL products I realized my oil was cleaner and oil changes were further apart due to the great quality of AMSOIL's Synthetic oils. Customer for life

Great oil

Engine running smooth like new.

I recommend this particular formula and series to all my customers. I’ve pulled apart engines that have used this formula and the internal components are always as clean as when they were assembled. In fact one occasion where an oil pump failed in one 1.8 Mazda the remaining oil on the components were enough for the engine to last 5 miles and still everything was salvageable outside of the bearings. No other oil would have done that. I personally use it in my BMW Alpina B7 which is a BiTurbo V8 with a very busy internal parts list and it runs smoother and cooler. I’ve tested the best off the shelf oils to compare and turbo rerun lines run consistently and dramatically cooler with the signature series. Oil is cheap engines are expensive, Amsoil Signature Series is a truly remarkable synthetic and it’s all I use. Worth every penny.

I ran this stuff in my car for 283,000 and I had zero issues. Had to get this stuff right away when I got my truck.

Helps eliminate valve coking on DFI ON NEWER MODEL .ENGINES

Great oil, got it quicker than planned.

Best oil I ever use On my Toyota Tacoma It's more quieter Runs very smooth. I love it. I tell all my Friend. It is little expensive But Hey You get whatever you paid for.

I use it in all my vehicles because I believe it is the best product available. I want to keep my engines in great shape and have a minimum of problems. I appreciate the test results given and the comparison to other company products.

Changed oil in riding mower and my Rigid generator. Both run smoother and quieter. Love my Amsoil

I only use Amsoil's Signature series of oil for my 2005 Mustang GT. It stays cleaner than other oils and the mechanic comments on the cleanliness of it when I do my oil changes. The car runs smoother and I can extend my oil change intervals - the car is a daily driver with 273,000 kilometres ( or about 180,000 miles). I recommend Amsoil all the time - it is the best. Thanks Amsoil

Exceptional product.

Still the best in the states you can get and still very affordable when you consider the change interval.