Customer Ratings & Reviews

I love this stuff. Keeps my vehicles running great!

I have used Amsoil since about 1978. It has made a big improvement for me. This Signature series made small mileage improvement, as well as smoother performance. I don't drive many miles a year so I only change my oil once a year, that is in May. When I change my oil it looks just as clean as the new and the filter looks the same. My car is 12yrs. old with almost 37K miles

The Title says it all - Without question this is Hands Down the BEST Motor Oil in the World for any type of Engine! Must be Tough for Amsoil - being the Best type of Motor Oil ever made they have a TALL TASK in front of them and that is “How in the World are we going to make the BEST Oil even BETTER!?” With that being said I want to Thank all the Great People at Amsoil for putting out a High Quality Product in the Age of “Cheap Crap Sells Best” - I know the Amsoil Team will find a way! Now finally I’d like to say, I Care for my Vehicles and know when I use their Oil, Filters, and other Products, I’m getting EXACTLY what I PAID for and it means a lot knowing that QUALITY products still Exist that people can actually stand behind and TRUST !!!

I have been using Signature Series Oil since about 1992. I put it in every car I've owned since then. The last car I owned has over 350000 miles on it and still running. Good stuff!

I’m sold switched from Mobil 1

This is the first time using Amsoil. I don’t put very many moles on the but so far it’s is doing what it was designed to do.

I have used Amsoil for many years now and and my oil gets changed once a year. Great, no compromise, product. It is the only oil that i use

Best performance oil available! Best company support.

Best performance oil available! Best company support.

I have used this 0-20 since I bought my 2008 Dodge Ram 4.7 new. The truck with 84,000 miles stil preforms likel new, with no loss of oil between oil changes.

The only oil I use.

Best oil ever bought, motor runs a lot smoother and less clicking noise as well. Car pulls better as well. No gains but no hiccups and no smoke as well.

I just love the longevity of this product

Noticed an immediate difference in engine noise. I will not use any other oil than Amsoil in my vehicles

Great product line for all your engine needs.

been using AMS oil it for years hasn't disappointed me yet and cuts down on oil changes

I have driven hundreds of thousands of mile using Amsoil products and never had a lubrication issue. Great staff and service as well. Thanks Amsoil team!

been using AMS oil it for years . hasn't disappointed me yet

Use amsoil in all of my vehicles from my high performance 4 cylinders to my EcoBoost to my generator and my kids 50cc motorcycle.

Ever since I bought my 2019 Sierra Denali 6.2 I’ve been using Amsoil in it. I get about 7500 miles between oil changes and I’m really happy with the way the motor runs.