Customer Ratings & Reviews

I have had great luck with amsoil

I’ve used the standard/basic 15w-40 HD synthetic in my 97OBS for decades. With new injectors/hpop/ipr/turbo and inter cooler along with Marty’s e-fuel system I wanted added protection and extended service intervals.

I have three diesel pick ups and I use this oil in all of them. Great oil and I love the longer intervals between oil changes!

I have ALWAYS been and always will be a firm believer that Amsoil is the best there is. I run Amsoil in both my trucks and my SxS.

Great oil, easy starts in cold weather. Keeps engine clean.

Amsoil makes a great product ,I have used this for all of the life of my LMM diesel and it is at approximately 330000 km's. I would recommend their products on any gas or diesel. Here's to the next 330000. 😊

Awesome product and was shipped in a very timely manner .. will use this product for the life of the truck..21 Chevy 2500 Duramax

I usually change oil every 10K but if it goes over that I am not worried. Amsoil will continue to provide protection.

I always use Amsoil when I am traveling and pulling my RV. It gives me peace of mind knowing I use the best.

I have used this oil in my 1997 Ram 12 valve diesel for many years. I tried other brands designed for diesel engines but none perform as well as AMSOIL. I have less oil consumption and believe it or not, my oil stays cleaner over the life of the oil change interval. Well worth the extra cost.

Motor runs quieter and smoother.

The 2.5 gal jug makes an oil change super easy.

Excellent oil

I did a test on my 2009 Cummins - I ran this oil with the Ea0 filter and tested it at a third party lab every 6,000 miles. Every test came back perfect until 24,000 mile interval - at this point, the test showed “slightly elevated” Molybdenum levels. The Certificate of Analysis for this specific test noted that the oil was still perfectly safe to run despite the slightly elevated Molybdenum. To summarize, this oil saves me money on oil changes and protects my diesel engine like no other on the market. Thank you and I love you AMSOIL!

I've known amsoil since the 70's, I trusted it then and I trust it now.

This stays clean looking a lot longer than anything else I've used. And for hotshot runs cross country it's a must for fuel economy

I use Amsoil in all my vehicles including motorcycles.

Only oil I use for my F250.

Have a 2009 duramax 364,000 miles runs like a champ. Would not use any other oil in it.

Have a 2001, dodge ram 2500 with a Cummins diesel and automatic transmission. I’ve been using this oil since I bought the truck in 2004 and have had zero oil related issues, and this truck is regularly, overloaded and overworked.