Customer Ratings & Reviews

Excellent oil

Good product holds up under extreme conditions

Low mileage 5.3 in a GMC 4x4 crewcab. Because of direct injection i installed a catch can to help prevent intake valve carbon deposits. Previouly had been long time Mobile 1 user, with Mobile one i was draining several ounces of oil/blowby byproducts between oil changes. Since i changed to signature series amsoil there has been practically nothing in the catch can. Very significant in my opinion. Additionally this has been occasional towing of my 26ft boat. Im impressed and pleased and will be changing over my other vehicles to Amsoil as their oil changes come due. Thanks for a great product that is a cut above.

The signature series is the best of the best !!!

Changed the oil on my wife's 2005 Toyota 4runner and she noticed how much smoother the engine ran. We have over 400k miles and it still runs great. Always use AMSOIL!

Good oil.

Awesome

There’s no oil out there that compares with Amsoil. I use it in every motor I have. And in the chain saw gas too. All the motors run Very well. If your considering trying Amsoil, you’ll be Very Thankful you gave it a try. Your motors will too. It’s the Best oil out there.

I've been running Amspil for about 10,000 miles. The oil looks new!!

I have been using SS 0W-20 in my 2010 Lexus RX350 since I bought it new. I'm up to 120,000 miles with no hint of an engine issue. Based on using SigSeries oil in my 2000 Toyota Tacoma (215,000 miles), the Lexus will last forever!

So far I feel the different driving my CRV. Gained more mile per gallons. I run very smoothly and the protection is there. Thank you Amsoil

This the best oil for you tubo or Hi RPM vehicle I will recommend this product all day long because of the quality and the service for this product

YouTuber Project Farm pitted Amsoil against several other top brands and Amsoil was the top dog in nearly every category. Do I wish it were cheaper? Yes. I'd use it my commercial applications as well, but as it stands this oil is really only worth using on a vehicle you really care about and plan to keep for a long time.

Works great in my 2.5L EvoX Mivec still works. Amazing oil

I have used this product in my 2014 Mustang and in my 2017 Taurus. Both cars ran very well and the inside of the engines look like new, at around 80,000 miles. I change my oil and filter at 15 to 18 thousand miles and have never added a drop between oil changes. I plan on keeping the Taurus to at least 200,000 miles.

I change the oil for my 2016 Handa CRV, 2012 Chevy Silverado and makes my cars run smooth and quiet

Great quality engine oil. It has significantly quieted down my 2.4L Tigershark at idle and at start-up. This engine used to consume at least 2 quarts of oil between changes. I've only had to just top off every now and again after switching to Amsoil.

I know this oil is the most premium oil that’s why I chose to use it in my 2021 Shelby GT500. I demand the best engine oil that’s why I’m using the Amsoil Signature series motor oil!

We have purchased 2 12 12 quart cases so far. delivery was fast and easy.

When I purchased my new Kubota tractor with a diesel engine and saw the manufacturer recommend 10w30, I knew I was switching to amsoil. I trust nothing else in my engines and I even use it in my generac home generator. Thanks amsoil for a great product that saves me money in the long run!!!