Customer Ratings & Reviews

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!

Love amsoil! Ships right to my door and is always quick to arrive. It's all that's been run in my Cummins since it had 60,000. I am at 280,000 and counting. Amsoil speaks for itself!

Excellent at every point.

Use Amsoil synthetics with bypass filtration in my 2012 Ram 3500 Cummims. Oil analysis has got me over 20,000 kms between oil changes. Highly recommended

In addition to long interval oil changes my oil has to get me through all four seasons especially the cold North Eastern winters. I've tried many brands of oil and Amsoil Signature Series has proven to be the best. Cold starts no longer an issue if I forget to plug in my truck overnight or just leave it off for a shift at work. I really like this oil and trust Amsoil products.

Since using Signature Series Amsoil in my F350 7.3 my truck is quieter and my mileage has increased. This oil is a miracle, I've been working on vehicles for over 40 years and this product has given me the best results of any lubricant ever.

Used the diesel oil in my bosses 2004 Chevy 3/4 ton 2500 PU,After this demo,will use in all equipment