Customer Ratings & Reviews

When i was racing I know the year end was much cooler than my competitors as well as the engine. I've used it in everything I've owned since becoming a member in the early 2000's. Great oil. Used to run nothing but Kendall being a Pa. guy but I use Amsoil now.

I bought a used '07 Lexus RX350 and from day-one the engine was very loud upon first starting. It almost sounded like a diesel for the first 3-5 minutes. By the second oil change using Amsoil synthetic that engine had quieted down to normal. I'm a big fan of Amsoil and use it in all my cars as well as a motorcycle. This product works!

This went in my 2014 Mazda 3 and it performs great especially with the winter we had.

We bought a 2018 Kia Soul for commuter duties,and it was due for its first oil change.What else would you possibly use other than AMSOIL!? Car was noticebly smoother and quieter right off the bat,and as a nice bonus picked up 2 mpg.Gotta love it.

This was the first use of amsoil and I will say that it does not disappear like the Royal purple does that I was using. I love the amsoil products and will continue to use everything that they have.

100% synthetic, American made, what else can I say, love it!!!

Great OEM alternative

I have used this oil in each of my vehicles for years and have experienced increased mileage and reduced oil consumption.

Great stuff

I ordered this oil for my younger brother and he was amazed at the noticeable performance gain and fuel mileage, and the oil breaks down much less oil stays looking new for longer.

Have been use their motorcycle oil for many years. Recently had some engine work done on it and the mechanic couldn't believe how clean everything was. So now using it in new truck.

Excellent oil based on science technology and testing, not based on false advertising but robust additive packages high quality base stock

I use Amsoil in all my vehicles and toys.

Have used amsoil for years. Leader in the industry. If you love your vehicle or rely on it heavily then you should use their oil

I have put over 300,000 miles on more than one GMC...GREAT products. Still use all AMSOIL products, from grease to Oil.

AMSOIL Signature provides outstanding protection for my engine. Moreover, with Amsoil oil, I only need to change my oil once a year.

I've used AMSOIL for many years. It's a great product.

I used this oil in my 2006 Acura RSX since I bought it 6 years ago. It had 35,000 miles on it then now it has 187,000 miles. Still runs like new same power, uses no oil. And when I change the oil it still looks fine.

best oil on the market

Very impressed with the oil. I was. Mobil1 fan. Not anymore. I got better fuel mileage and didn't burn any oil like I did with the other product.