Customer Ratings & Reviews

I have been using this oil now for about a year. It seems to be doing better as far as oil pressure goes compared to my previous oil. I have become a loyal Amsoil fan and user now!

I like the online service and the speedy handling of my order.

Engine runs great after switching from Schaeffers and I received the product next day without pay for extra shipping.

Great oil, runs much cooler than the Ford synthetic I had to use in warranty. Even after 10K miles in Texas heat towing, oil keeps cool and the turbo is happy. Even after 10K miles the oil comes out slick. I use it in every engine and gear box in my truck, car and both motorcycles. Couldn't be more happy with an oil and additives.

Not sure how accurate of a test this was, but I poured burnt Amsoil oil and NEW Castrol Syntec on a fire. Took the Amsoil twice as long to ignite. I know this isn’t a “legit” test, but heat is heat. And the Amsoil had 15k miles on it. That sold me

I use this in all of my diesel trucks and construction equipment! Pure synthetic protection for my investments.

Awesome product

18,000+ miles on first change using this product. Oil analysis was not perfect, but said to keep running. Since low miles on engine, decided to change.

I will only use this moving forward

Amsoil awesome product

Nothing on the market better. I will continue to run ams in everything I got!

I have an ‘08 F-250 powerstroke. Truck loves Amsoil synthetics. I run Amsoil exclusively these days. My vehicles all run better on Amsoil. No joke. The preferred customer program and drop shipping to my front door makes running Amsoil very affordable. Great piece of mind knowing that my expensive truck has the best lubrication that money can buy.

Great oil for my Ram 3500. My truck does nothing but pull heavy trailers so I use this oil

I switched to Amsoil after Shell was not able to get the additive for their T5 Semi Synthetic oil. I'm glad I switched! I really Like this oil. I seem to be getting higher oil pressure and longer life with this oil. I have only been using it for about 6 months but I do like it a lot!

My order is at my door usually in a couple days. The quality is excellent.

As in the title, great product

Amazing oil. My engine is quieter than before. Better fuel mileage. Engine temp is 5 degree's lower. Amsoil once again knocks it out of the park. Great oil!!

Love Amsoil products. You cannot beat the quality of these products!!

Best oil for Diesel engine

This is the second oil change that I have used this oil. I really like this oil! It seems to preform better than to other brand of Oil that I was using. It seems to hold better Oil Pressure than my previous Oil. I have become a Amsoil Customer for Life!