Customer Ratings & Reviews

I use this Signature Series 0W-16 oil in my Kia Niro hybrid car because it's the best available. A fast flowing oil is needed for hybrids with the gas engine kicking in and out. My only complaint is that it is not yet available in a one gallon jug. I prefer gallon jugs as both my cars take four quarts during an oil change.

Love the oil, helps engine run smooth.

Consistently proven the best synthetic lubricants.

Got a new to me Ram 2500 and everyone recommended AMSOIL. Went with it and it increased my fuel mileage by about 3 mpg and have had zero issues.

I have been using AMS OIL in my 21 Ranger Tremor since it was new! Have been getting a consistent 24-26 mpg which is quite more than the estimated. I believe that it is the oil that is giving me the protection and lubrication for the improved mpg!

All product AMSOIL they are the best the best tank AMSOIL

Excelente product in the market

Great oil!

Great product and fast delivery every time.

My turbo car loves this oil

Very pleased with Amsoil. It's expensive but it has less evaporative loss and it's still new looking at 1500 miles. I still wouldn't recommend going over 5 to 7000 miles on any oil

I have used Amsoil 0W-40 and 5W-50 exclusively in two MB V6's for years... one with 56k and one with 205k miles with no issues. Super-premium product .

Amsoil is the best motor oil out dear ............. Protection for you're engine cost is high but in the long run comes dawn chipper.......

this is the first time I am using the signature series. I have used other AMSOIL. I won't wait for 15000 miles either I will change it out at 7k.

I bought a new Hyundai that requires 0w-30 synthetic oil. Hyundai recommended Quaker State oil but I couldn't find it any where. AMSOIL came through and it works wonderfully. I am now sold on AMSOIL! Thanks guys!

I switched all of my factory Ac Delco fluids to Amosil and my 16” Silverado has been a machine since! Best Fuel mileage was 26.8 when the truck had 11k miles, 7 years ago now 102k on it I just got 24 mpg and it has everything to do with the signature series. Don’t cheap yourselves out and protect your investments. My dad drag raced for many years and always swore by Amsoil.

I believe II can tell the difference using this oil vice other synthetics. Engine runs very efficiently and does not consume any oil using this product despite operating under heavy loads.

Very happy so far with the way my truck runs. Just changed my oil about a month ago so time will tell.

I am an old timer who has been a serious gearhead since the 1950's. I have been using Amsoil products for a very long time and have always found them to an asset in my garage. I have always tried to use the very best lube oil in my vehicles.

I recently had the little 5.3 L83 in my 15 Silverado freshened up with goodies from BTR, Frankenstein, GM Performance and the list goes on. Engine Dyno’d at 450 whp. At 8,000 RPM. I was using mobile 1 oil but at high rpm it didn’t feel smooth so I rarely got on it. Until I changed to the Amsoil Signiture Series OW-20. Now I do multiple pulls to 8,000 a day and the engine runs smooth as glass, also haven’t been burning as much E85 either. I’ll never use an other oil again and can’t wait to change my transmission fluid to Amsoil as well. Performance oil! Insane!