Customer Ratings & Reviews

In the eighties my father started using Amsoil in our family vehicles. He explained the benefits of using Amsoil. Over the years I tried other brands. I came back to Amsoil! Living in Phoenix with extreme heat, I need the best oil for my vehicles. I only run Amsoil in our three vehicles, and my air cooled Harley. Amsoil stands up to what Mother Nature throws at us. Thanks for a great product!

This oil is by far the best on the market. I have recommended it to all my family and friends.

Very good oil

Been exclusively using AMSOIL products in my vehicles since 2005. All three of my gas vehicles continue to run smooth and burn little or no oil.

Best oil available anywhere. I am sure it is the reason my 2005 Chevy Avalanche is still going strong with well over 200,000 miles on it!!

I have been using Amsoil in everything I own.They have all types of oil related products that are great!!

You can trust that it's 100 % Synthetic and it also increased my mpg about 5% in my 2012 f250 6.7 Diesel Been using it ever since 3000 miles and now I have 68,000 miles very happy with the product

Love it

Started using over fifteen years ago. First in my motorhome. Was told it could increase my MPG. It did by 2 miles to the gallon. In a motor home that's a lot. I have been using it ever since in anything that burns fuel. Love all their products.

I use no other oil in my truck. The simple fact that this oil not only performs to a high standard in the heat, it also out performs other oils in Canadian winters. Therefore, I use nothing else in my truck and I also use Amsoil in my 2015 Indian Chieftain.

I used the signature 5w30 in all my cars and trucks. Never a problem. Again...BEST OIL PERIOD!

I use this oil in my 2017 GMC Sierra. It exceeds the Dexos 1 requirement, that GM has dreamed up. Don't believe their hype this oil will work great in your rig.

Been using this product for more than 3yrs with 25,000 miles oil changes. My Van runs the same as the day I bought it @ 29,000 miles now nearing 248,000 miles.

I've been using Amsoil in my Supercharged Miata, running track days and daily driving. Using this oil is part of my strategy for dealing with heat and avoiding over-heating in the Phoenix heat. Zero engine problems, and I run this car hard.

Use in everything I OWN

Bought used 98 Cavalier, changed oil & filter to Amsoil after 3 tanks & ample road tests. Smoother running, increased power and economy. Car pulls hills better, idles better, and shifts smoother.

I been running Amsoil for years

Have tested it out an out performs wvery thing else as in apples to apples

AMSOIL, the best thing that ever happened to my automobiles! I have used AMSOIL for decades and would not change to a different brand even if it came free...

I've been using Signature Series 5W-30 Synthetic Motor Oil since I purchased my 07 Silverado back in 06. I change my oil once a year and have had no problems at all. My truck now has 196K+ miles and only recently I've had to add about a half quart after 6 months. I think I'll start changing the oil twice a year from now on. My truck deserves it. Amsoil synthetic oils are the best!