Customer Ratings & Reviews

Great oil for my Duramax. The best price and shipping are always spot on.

Amsoil has always set on the top shelf. That should be all that needs to be said.

Changed ever 5000 miles never had to add oil between changes.

2nd oil change using AMSOIL in my 3.0 Duramax. Much quieter starts and running

The only oil that I use in my diesel truck

One thing I like about this oil there’s no additional oil in between and keeps the engine cap so clean for zero residue.

I use this oil because it is about the same price as factory oil, but I know that it is better quality. If you follow amsoil and their products, you can see the difference. I just bought a new truck and want to take care of that expensive engine! I have used this oil in my 2016 Ram Cummins 2500 from day one, and now will be using it in my 2025 Chevy 3.0 litter Duramax until I no longer own it. It's just good oil!!

I have been using Amsoil for over 40 years in all my vehicles and will continue to use Amsoil for all my vehicles.

Outstanding oil

I really like the oil for my 3 L GMC diesel. The truck does not use a litre in between oil changes as it did with the AC Delco oil.

The oil is a great value considering it is less expensive than the OE GM oil for the 3L Duramax and you get a top quality Amsoil product not some rebranded oil from GM. No downside on this than I can see. Been an Amsoil customer for over 15 years, I keep all my vehicles for a long time and I have never had any oil related issues.

This is good oil makes engine start better and keeps it quite

Good product using on 3.0 baby duramax. Decent price compared to other websites

Just wanted to try since I have been using amsoil in my 2004 lb7 duramax for last five years with great results..

Works great, runs smoothand never had an issue.

Couldn’t ask for better product

this is a great product 6 x protection over the GM regular oil seems to not burn it as fast as the G.M. Oil a d it is $ 12.00 a liter cheaper that the dealer won't use anything else.

I use this oil on my GMC 1500 Sierra with the LZ0 diesel engine. I have been using the oil since I bought it new and have been doing oil samples every oil change. This oil always has lots of protectant additive left at an oil change.

This oil have been using since 1200km. I switched to amsoil and never looked back.. product has more wear protection then the factory oil. I have a few friends with it in there 3.0l.

Easy to use old guy friendly and great savings