Customer Ratings & Reviews

Works like a charm! I even heard the turbo even more, I'm not sure if that's just me but it is a major difference from when I was running Pennzoil.

The best oil period. Very satisfied.

Go to “Project Farm” on you tube and see how Amsoil performs versus other oils. Objective testing not just testimonials ,

I have used Amsoil for my previous Chevy Cruze with the 5w30 signature series and the idle was smoother than Mobil 1. Now I use 0w20 for Subaru and I still have the great protection by Amsoil.

I had previously used Castrol, Mobil 1 and Valvoline synthetic oils and had no issues after 5,000 mile per changes. Since using Amsoil I'm able to extend the miles between changes with better milage and smoother engine idle. Amsoil sync burns cleaner and not as dark after 9.500 miles then the others did after 5,000. I have always used Wix extended life oil filters on all my vehicles...

Shipping was fast, great product! Worth every penny

Used this oil now for 4 years. Only have changed the oil twice. Excellent gas mileage in my F150 and motor runs quite.

This stuff is great, I was running different oil before I switched to AMS BOOSTED. Then with my car build I went with the Signature series and it’s preforming amazing.

always have used full synthetic motor oil,1st time now using amsoil. will keep tabs on overall performance and check dip stick regularly. can get hot here regularly and cold too. so far works well with ford 2.7L eco boost engine. also always use best 91 octane fuel. more to come,lets drive it

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