The Diesel engine in our 2018 GMC Canyon runs smoother and quieter. The truck gets 1 mpg better fuel mileage since the switch from Mobil1.

I felt the difference in the operation of the engine a week after the oil change. The engine began to work softer, the noise level decreased. I did not notice the difference in fuel economy, but the engine began to work more gently and responds to acceleration more quickly.

My 2.8 Duramax runs quiet and smooth with Amsoil oil. Noticeable difference compared to factory oil.

I own a 2019 F-150 Powerstroke 3.0 Diesel. There is only 1 (one) recommended oil for this engine and it is a Ford 5W30 oil, made by Kendal, I believe. That is what I was using since new, until Amsoil came out with the exact same spec oil. Even though I paid for an 8 year extended warranty and service plan, (including oil changes), I still bring my own Amsoil oil to each maintenance visit when it is oil change time. I used Signature Series in my 2015 F-150 with the 2.7 Eco-Boost and the engine performed fantastic. So when I got the Powerstroke, I wanted to use Amsoil as well but had to wait until they came out with the different spec oil and now that all it gets!! It is running smoother than ever!!

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Just the best oil there is

Great product

This oil is the best and won’t use anything else.

It’s good quality oil and the customer service makes it well worth the extra money. I have never seen any measurable benefits from it but also have not seen anything bad from it . I plan to keep using it as long as there customer service stays the way it is .

This IS the Best Engine Protection money can buy. I have been using this oil in my 2017 GMC Canyon 2.8L diesel for years now. And we use AMSOIL products in all our cars, trucks, and motorcycles. We have been AMSOIL customers for a long time.

I have used I. Each of my last 3 GM duramax engines. Quality product

Changed to this from my AC Delco oil. Immediately noticed that the valve noise on cold startup was eliminated and oil pressure has been running about 200 kpa higher than previous oil and even after a run down the highway the pressure is still more than 100 kpa higher.

I have been using Amsoil Diesel Oil (Dexos2) for 3yrs now in 2017 GMC Canyon 2.8L Duramax. Amsoil is a very reliable and trusted product. I have also been using Amoil products for years, in my truck's, car's and and my Harley's. Amsoil is The Only Oil I will Buy.

great product