The Ram 2500HD Warlock may wear a mischievous name, but what makes it stand out is its mix of work-truck grit and off-road ...

The Cummins Mustang is already crazy, but today we see if it can take every pound of boost the turbo can throw at it. From cold starts to full-throttle pulls, the engine gets pushed harder than ever.

A lot of heavy duty trucks display engine hours along with the total mileage. Depending on the use case of the truck, engine ...

From historic giants to modern behemoths, these ship diesel engines showcase vast power and engineering fit for the longest ...

The finalists were announced in Los Angeles on Nov. 20. The winners are to be announced on Wednesday, Jan. 14, at the Detroit Auto Show.

The extra power is fantastic, and so are more forward gears. The old six-speed automatic, with its huge step from first to ...

A new fuel-blending method appears to make diesel engines cleaner and more efficient at the same time. Early results point to ...

Lead photo: Cummins’ Replenishment Center in Whiteland, IN. Two weeks after news surfaced that FedEx will lay off more than 600 employees at two Cummins distribution centers in Memphis, a new report ...

Light-duty customers have a single diesel option for model year 2026, that being the 3.0-liter Duramax inline-six turbo ...