Customer Ratings & Reviews

Second round of using in my wife’s Caddy CT6. The bundle option was very convenient. I’ll begin using in my Silverado soon. Old Product looked great coming out of pan (like we could’ve gotten another 3k miles out of it).

AMSOIL stands out for its quality and reliability. It’s a premium product that delivers exactly what it promises. If you want better engine protection and longer oil life, I highly recommend AMSOIL.

No matter what product I use of ams oil, they always deliver and never let me down.

My engine sounds fantastic when this oil is in it and the metal parts per million are very low after an oil change using this oil.

I've used this oil for a few years in all four of my family's Subarus. All have the same 2.5L H4 engine, are 2014, 2015 models with between 80 and 140K miles. I change twice a year at around 5K miles. I know the Amsoil folks claim this oil is good for lots more miles, but we drive short trips and so I change it more often. I add less than 1 qt. between changes, so oil consumption is low for such high mile engines. All engines start, run and drive very smoothly and quietly. I definitely recommend this product!

My daughter purchased a used Alfa Romeo Stelvio. I'm not sure what oil was in it to begin with but we had to had oil at least once in a 5000 mile interval. We have been using the Amsoil ever since and have never had to add between changes, still at 5000 miles.

Ive been using amsoil for years, from racing ATVs, Drag cars, daily drivers, ect. Member for awhile. I try to convince everyone to switch. Never had a single complaint. Ships always fast and customer service has never done me wrong.... just buy it already, its worth the nickels and dimes.

Have been a loyal Amsoil customer since 2007. I’m more than pleased to run this product. I will always run Amsoil in every product I own.

When I put in my motor, the level of functionning noise reduce by half

This review is not about the best oil ever. Rather, it is a recommendation that when ordering off the web site, one should have thee option to repeat any of thee previous orders and /or mix and match from previous orders into one order.

Oil is great

Best investment for my vehicles! Mico encapsulated oil! Worth every penny! Protection forever!!

Good oil. Better gas pileage.

Great engine oil. Engine internals have no varnish and very little to no wear.

Huge difference in all our vehicles in our stable. This is a must upgrade from a OW-20 especially if you have over 75K miles or 100K miles.

The oil and filter works awesome

The best oil ever. I wish they had more swag to send

Awsome....truck K is running like the first day I got it.........u guys are awsome customer for life

I've been using AMSOIL products for all my vehicles for 20+ years. Boat and motorcycle for a little less time. I love the extended oil change intervals. When I order supplies, they generally arrive at my residence within 2 days and sometimes the next day. Not sure how they do that, but they do. I've never had any issues and my confidence in their product line is noteworthy. I've used Signature Series on primarily on GM and Toyota. The difficult part is sometimes seeing the oil level on the dipstick as this maintains clarity for an extremely long time. I avg approx 15K miles/year. I highly recommend.

I have been using Amsoil for decades and have been using it in all my vehicles. Never had an issue with Amsoil, and believe that they have top quality products. It is best to be a member to get the discounts in price and shipping. Will continue to use Amsoil in my vehicles in years to come.