
An internal-combustion engine works by converting fuel and air into mechanical energy.

Modern diesel engines in proper working order should not produce black smoke under most conditions.

They burn different types of fuel, but that's just the start. Here's what you need to know when comparing diesel...

Adding a diesel coolant additive, or supplemental coolant additive (SCA), midway through the service interval is easy to overlook and...

2019 was another eventful year at AMSOIL. We introduced several new products and continued to pace the industry. Check out...

Diesel cetane indicates the combustion speed of diesel fuel. Higher cetane ratings lead to maximum engine power and efficiency.

Randy and Sydney Weaver, of Weaver Customs, keep raising the bar for show-stopping custom vehicles. Check out their latest build...and...

Here are our 12 favorite builds from 2019 Ultimate Callout Challenge.

April is here, and for those who love to spend time at the drag strip challenging their reaction time, on...

Here at AMSOIL, 2017 delivered a whirlwind of activity from start to finish. From new and reformulated products that further...