Customer Ratings & Reviews

Amsoil protect my crankshaft when my oil pump failed and I get better gas milage, epa rating for my car is 35 mpg and I repeatedly hit 40 mpg.

2010 Toyota sequioa w/ 200k on the clock. Doubled oil change interval to 10k, doesn't use a drop between changes. Frequently idle and tow in hot Mississippi weather. Noticeably quieter valve operation over other top shelf synthetics. I just did a 200k service and noticed there is zero sludge in the engine. It was as sparkly as a transmission. I expect 300-400k out of this engine but it is a Toyota not a Ford!

I use Amsoil in everything machine I own. That Amounts to one diesel pickup to three gas pic up and two mustangs one being a 2011 Shelby GT500

300000 miles with once a year oil change. Amsol is the best

I say this product would out perform Mobil 1. Great to extended your drain intervals

The best oil I've ever used.! Hands down!

2013 Kia Rio o my has a 3.5 qt capacity. Best oil I've seen for this scenario

Used for engines and trans. I researched oil products IE: Royal Purple, Mobil 1, and Amsoil. Amsoil won.

Only Oil I will every use on my high performance cars

This is a great oil. I use this oil in two of my cars. I use Amsoil products in all my cars, truck, tractor, atv, and lawn equipment.

I use it in every engine i own. Cars, trucks, jet skis, power washers and lawn mowers.

I use this in a 2007 supercharged Mustang with good results and no problems.

My new Outback calls for 0-20 oil. This is a difficult thing to believe in considering I am old sckool and would rather have a heavier oil in the motor. So if I am going to put thin oil in this new car, then I want the best I can get. I been using AmsOil products for a while now and have no complaints .

My 302 race engine loves it! My old oil would barely last 1,500 miles but signature series is still golden after 5k! Thinging about swithing everything i have to it and see how a stock engine does up to 15,000!

The best oil I have ever used and I tell everyone I know.

Unlike other oils I have tried in the past this stuff seems to work very well in my 5.3 liter vortex, she runs much quieter and cooler then before, I was a big a mobile 1 user before trying the amsoil and I've been using it ever since. If you rilly listen to you engine it will tell you what it likes, while that may sound crazy to some people to me this stuff is definitely approved by my motor lol. It is good stuff a bit pricey but you will get what you pay for with this product there's no dought kn my mind.

For the long mileage & city

Amazing products. Will not run anything else in my vehicles, atvs, snowmobiles.

When changing oil in a turbo engine the new formula Amsoil Signature series is a no-brainer!!

Product is terrific. Improved engine idling & gas mileage. Good engine wear too! Shooting for 300k & beyond!