Customer Ratings & Reviews

use Amsoil products on all my equipments

Have used this oil since OEM break-in oil on my 2018 RAM 3500 w/ Cummins HO 6.7. At 3000 mi switched to Everything AMSOIL! I get yearly oil analysis reports on this oil and it comes back fantastic every time. It’s well worth using diesel oil and AMSOIL filters too.

Switched from royal purple to this because the LB7 would not hold oil pressure when it was hot and it was burning oil and it never did before using the purple. Truck now holds oil press at 30 at idle when hot and is back to not using oil. Will not use anything else in this truck now

This product has the best anti-wear properties offered by any manufacturer. The 2.5gal jug is exactly what my vehicle requires. Customer support is amazing. The wide range of products offered by Amsoil makes them a one stop shop for any internal combustion engine you may have. I highly recommend Amsoil for your next and future needs!

I have a 2019 and 2023 Duramax and I always use Amsoil it both. The oil pressure and temp stay very consistent doesn’t matter if it is fresh or at 8,000 miles.

First truck I have used it in. The ram 2500 diesel to expensive to put cheap oil in. Very happy with it my oil pressure is a little lower and I change it every 15000 per Cummins. Oil is as clean (particule wise as the first day) Only the best for my truck.

Use 15-40 synthetic diesel oil also in differential

use amsoil for all your equipment don't risk it with cheap oils.

It’s the only oil I use in my Diesel truck and motorcycle, Go with the best do your oil changes , it’s the cheapest way to keep anything from happening!

I have been using this oil for some time now and find it to be the best lubricant for my diesel truck. Everything runs smoothly and quiet.

Oil used in 6.4 hemi and 6.2 gmc. Works very well.

We are off grid and have a diesel generator. I have used only Amsoil products for this essential equipment. Still humming after 7years of service.

I have a small horse farm. We use Amsoil Max duty 15w-40 in both tractors, both diesel trucks for long life and protection.

Ordered before noon and recieved the next day!! My 6.0 loves this stuff. Extremely happy with this oil!! Will continue to recommend to others.

I use this in my 2 diesel trucks and my welding machine

Best motor oil

Quick service , received oil in two working days . Been using since I purchased my vehicle with no issues . Thanks AMSOIL ..

After I order I received no confirmation email or updates on delivery date. Felt lucky when the order arrived. A bit more communication could go a long way. Like look at the successful online stores maybe.

I really can tell a difference using this oil vs any other on my 6.7 Powerstroke. It really runs very smooth. All I'll ever use for oil in my diesel. Very happy.

This product meets or exceed any diesel oil product out there! The only engine oil I will ever use in my truck period