Customer Ratings & Reviews

I use this oil in my 2012 ram very satisfied with this product

I am a long time user of many Amsoil products and am very happy with all of them. I never worry about wear in my Duramax with Amsoil Max-Duty Synthetic. I was convinced that Amsoil was a far superior lubricant after reading about Amsoil's initial development. This was high-tech before high-tech was common outside of military applications. It took real vision and perseverance to develop synthetic lubricants that are truly affordable.

Great product. I on mi y use Amsoil

Been using for about 14yrs in 93 Dodge Ram diesel. Still runs great. Got around 250k miles

It makes my customers happy and more confident thier engine will last longer

My Power Stroke runs better with Amsoil - Bottom Line !

I use this on my boat engines and truly stands up to the test!

Great product. Still experimenting since installing my by-pass filter system. Oil looks cleaner than before.

Doing good so far, just put in back in June. Seems to be doing good.

Always prompt shipping. Best oil out there

Change oil once a year or 5000 miles

I call this real engine oil, I feel that while running my truck hard that AMSOIL oil protecting my engine internals better then any other engine oil out there.

The best oil period.

Great product

Engine oil.

I have used this oil for the past 11 years and by far it is the best that I've come across

Great products

great oil

I use this product in my 13 Frieghtliner with a DD15. 60-70000 km between oil changes. My DD15 does burn or lose any oil, as a matter of fact I don't have to add a drop. My oil pressure is higher before a service then regular brands overall. I can't rave enough about this oil.

Great oil for my power stroke.