Customer Ratings & Reviews

This is my summer go to oil

Couldn't be happier with the prompt arrival of my oil and filter and on the estimated time of arrival as well. My cummins is running like a clock with the 5w20 signature diesel oil only 1000 miles into the very first service with the filter and oil so I'm looking forward to the next 100,000 miles with it. I do want to add for your awareness that when it opened all three gallon oil jugs, each seal had popped open when I went to pour them in the pickup. I know that once it leaves your facility you have zero control over the "care" either UPS or FEDEX football teams provide the products. Be it elevation changes, being gallon jugs versus quart jugs applying more pressure inside if dropped or squished or what have you, I just wanted to pass it forward. Love the products thus far and look forward to continued use as well as use of some other products in the future

My 2013 Duramax loves this oil

Best products on the market. A vehicle is an investment. Why not treat it like one? Use amsoil.

I've been using this product for 20 years, when I've seen the inside of other engines I use Amsoil in, I see the lack of wear. It must be doing the same thing inside my Cummins Diesel.

I bought it to run in a new diesel engine. I will run it hard and keep reviewing as I use it more and more.

I really enjoy this product. I can change my oil once a year or at 25,000 miles. In the long run this product saves me money.

270,000 miles, still going strong

Amsoil Best dam products on the planet.............. Bar none...........

I change my oil every 5 to 6 thousand miles. I have 157,000 miles on my Cummins and uses about a half pint of oil. Been using Amsoil since I had 80,000 miles.

Wanted to start off my new tractor with its first oil change with a proven product that I trust and would recommend to any one, I want to keep my tractor for many years so why not provide the best insurance policy that I could get

My trucks Duramax loves this. Anywhere I’m at in this country, I’ll always be able to get Amsoil the same day I need it.

I can say if I would of know Amsoil as growing up it’s great and can’t say bad about it

Great oil. Instant oil pressure on star up in cold weather.

So far awesome product

The top 2 best, most honest mechanics I know recommend Amsoil. I've been using it for a couple years now and agree it's the best. Most noticeable to me is starting my diesel in the winter has improved as I don't have to plug it in anymore and it warms up faster. Also like not having to change the oil as often. Worth the money. Mike

This is very good oil for my 6.7 diesel. This is the best oil I have used in any of my diesel trucks.