Customer Ratings & Reviews

Best oil for 3.0 duramax seen increased in fuel mileage

Great oil and better price point than others with the oil change kit. Especially with this oil being recommended we are very limited in options. Would use and will use every oil change.

Seems to be doing what is supposed to. I am confident in Amsoil product more than the GM oil. I'll continue using Amsoil. Dexos certified or not I'm certain Amsoil is better.

I have used this since purchasing my Chevy Cruze diesel. No issues at all. I have also sent oil out for testing after 7500 miles. Tests have all come back satisfactory.

Best oil hands down, not even a debate.

Been using this since the vehicle was new. At 188,000 + miles and going strong.

After using this oil for the last 15k miles or so, I’d say it’s a nice option to have aside from the AC Delco and M1 options. Knowing that Amsoil is a premium oil is what has kept me using this oil. There is still the usual oil consumption similar to OEM and the engine runs about the same as the OEM oil in my case. Trusting that Amsoil is a premium brand, it should be better at protecting the engine from wear which is another reason why I’m sticking with this oil.

Great price, excellent product.. been running it for over a year and no issues..

The second oil change where I’ve ordered up the oil change kit. Arrives at my door, no hassle making the rounds to whatever parts stores, as each only has 3 quarts in stock. 2023 Babymax Z71 Trail Boss.

This has been a great oil for me in my '22 GM 3.0 diesel. I see very little burn off and great mileage since I've been using it.

Good oil keeps my motor clean and like that you can get in quarts

Changed my oil for the first time in my 3.0 duramax and what a difference in the noise of the motor!! Call me crazy but it runs so much smoother.

Giving this oil a try. Seemed to quiet my engine. Better fuel mileage? Maybe. Will send a sample to the lab at oil change.

Just put it in my truck, will do a oil test on it in around 4000 mi.

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.