Customer Ratings & Reviews

I switched my 2016 Ford 6.7 diesel oil @ 60K miles...with 126K on it now and driving 100K per year towing heavy loads"half the miles". I trust this engine oil above all others and expect to get at least 500K on the engine before I buy another one!!!!!

This oil flows pretty good when the temperature gets down to zero.

used in a 6.0 Powerstroke. Probably the most demanding motor of oil because of the design of the 6.0 Powerstroke and the use of the oil to hydraulicly power the injectors.

This product is a good product that is good for a wide range of diesels. I run this in a 02 Ford F-250 and will be running it in a new Ram 2500.

Been using this in my diesel truck for years with never a problem. Online ordering was quick and easy!

I use this in a 2000 7.3 Ford Diesel. Motor has over 200,000 miles and still runs like a top. I will continue using Amsoil products; my engines run great and stand up very well with their products.

Use in my tuned 2006 2500 Dodge Ram Laramie Mega Cab. Many miles and still runs like champ!

Simply put, Amsoil is the only product I will use on all my vehicles, if I can help it. Have been using Amsoil since my first FORD SVT LIGHTNING in 1993. I am using the diesel oils for my foreign vehicle, a Ford Everest, that's made in Asia. I have also used the diesel oil in my farm vehicles, a Dodge Ram 3500, and other diesel engines. You can't go wrong with AMSOIL.

My truck just keeps running smoothly. I TRUST Amsoil.

I had this oil in my L5P Diuramax for 5,000 miles. I have never heard such a loud clicking noise come from this motors till I put this oil in. Will never use again. Oil consumption went from zero to adding a half quart every 1500 miles with this oil. Could not wait to get it out of my engine.

I have been using Amsoil for a very long time. I love when they come out with enhancements like this new diesel oil. I will take all the protection I can't get.

I bought a new GMC 3500 Duramax in 2005. The first OIL change was AMSOIL Max Duty Diesel pool 15W-40. With this OIL I only need to change OIL once a year (AMSOIL recommends once every 20000 miles) and I only have 10k per year. The OIL is costly but with the perfered fostered card ($20.00 per year) you save in the long run.

Very affordable and an excellent product!

Use Amsoil in all my vehicles and toys.

I'm using it for year in my semi and never left me down. Great quality lubricants.

I use this in my ram 1500 ecodiesel. It performs well. No usage with 49k miles.

I will continue to use this product.

Awesome product. Long time amsoil user. The products just get better!

Always been a fan.

The ONLY I will put in my '16 Ram 3500 Dorsal!