Customer Ratings & Reviews

I use this oil all the time in my customers and my small engines. No issues.

Short sweet and to the point, this is the best oil available. I faithfully use Signature in all my vehicles. It keeps the engine clean, and nearly eliminates the wear I am accustomed to seeing in engines using "dino" oil.

Won't use anything else! Totally satisfied!

Its the only oil I will use to protect a 30k Shelby engine. It stays clean, it runs cooler, zero oil consumption

Cooler operating temp, better mileage, longer oil change duration, almost zero oil consumption in 6 months of use.

excellent oil i use on my ford raptor.

So far my truck really seems to like the Signature Series in it. Im happy with the way the truck runs and seems to run smoother and idle a lot better.

Amazingly good oil. Have it in one vehicle since 30,000 miles, and find that when I change it, it is perfect. No level change, and very clean consistent viscosity.

As with all Amsoil products I know I am getting quality products that will protect my vehicles.

As with all Amsoil products I know I am getting quality products that will protect my vehicles.

As with all Amsoil products I know I am getting quality products that will protect my vehicles.

The best oil money can buy! I use it for all of my vehicles. I would not use any other oil in the market. Try it, you’ll like it! You just might switch over from the oil your using now.

I’m using it in my Challenger Hellcat I love it I will always gonna use AMSOIL in all of my cars! I never gonna buy any other kind of oil ever!

I have used nothing but Amsoil in my vehicles once I buy them and my wife’s Jeep is no exception. I expect my vehicles to preform well and in doing so I trust Amsoil to keep them running their best.

Been using Amsoil since 1975 when I first became a dealer in Berkeley, CA! My car calls for 5W30, but due to a slight bit of oil consumption at 200,000 miles I went to 10W30! My Toyota (bought with 140,000 miles on it) is purring like a kitten... :-)