AMSOIL Preferred Customer Program

Diesel Enthusiasts Trust AMSOIL

Diesel Testimonials

Professional engine builders and owners of competition-grade trucks are the toughest critics when it comes to anything that goes into their builds. AMSOIL has earned the trust of these professionals by delivering dynamic synthetic lubricants capable of protecting the most sophisticated diesel engines. These same lubricants are available to you

Ben Shadday of Done Right Diesel Performance specializes in diesel performance and repair. He clocked an Outlaw Diesel Super Series Pro Mod Record of 4.71 seconds in the eighth mile and has risen to the top in diesel drag racing.


"The rod bearings, everything looked great. We did have one crank bearing that wasn’t bad, but it showed some wear, and rightfully so. The power level we’re at, that’s kind of what we were after. We want to know, do we need to schedule a maintenance halfway through the season. The cam looked great. The tappets looked good. There was no concern with either piece there. The protection is definitely there."

Supporting Your Passion for Diesel

AMSOIL supports diesel enthusiasts and diesel competition. As the Exclusive Official Oil of the Diesel Power Challenge and the Ultimate Callout Challenge, AMSOIL synthetic diesel oils keep powerful turbodiesel trucks protected and running at peak performance throughout the intense, high-heat conditions of competition.

Diesel Power Challenge


Ultimate Callout Challenge


A Company of Enthusiasts

Your vehicles and equipment aren’t just a way from point A to point B. They’re part of who you are. They define you. So it is with us. We’re engineers, chemists and manufacturers. But we’re also racers, gearheads and thrill-seekers. Like you, we’re at our best when working on our vehicles, fine-tuning their performance or cruising down the highway.

Our time behind the wheel and under the hood helps us experience firsthand the toll power, speed and performance take on engines. That’s why we formulate AMSOIL synthetic lubricants in our chemical and mechanical labs to push the boundaries of performance. Because our products not only have to protect our vehicles, they have to protect yours.