Truck OEMs say in a new lawsuit against the California Air Resources board that they are “caught in the crossfire” between ...

For their part, manufacturers have made DEF a non-negotiable part of engine operation to meet restrictions put in place by ...

New guidance to engine manufacturers will reduce 'derating,' an automatic trigger forcing diesel engines to operate at a ...

The expansive Cummins B Series engine line remains one of the most popular engines among pickup truck enthusiasts, but what ...

When you're shopping for a used diesel, it's vital that you ask about the vehicle's history. That's because there can be a big difference between a work truck with 100,000 miles and any other ...

As for the design, well … let’s call it a work in progress. SCG released a preview image that blends a Jeep Wrangler -like front end, a Ford F-150 -esque cab, a black chest for the hydrogen ...

FleetOwner was told this Ford F-250 Super Duty XL diesel work truck was just as capable as its Super Duty trucks equipped with a Tremor Off-Road package. We had to test that theory.

Cue the exhaust brake -– the unsung hero of diesel descents. Think of it like this -- an exhaust brake slows the truck by trapping exhaust gases, forcing the engine to work against back pressure.

Who Needs DEF? Owners of vehicles with a diesel engine over 74 hp that also meets the 2010 EPA guidelines as part of the SCR reduction system must use DEF. It's essential not to let your DEF tank ...

At first glance, the 2024 GMC Sierra Denali 2500HD Denali Ultimate seems like the Undercover Boss version of the heavy-duty truck world, as if it put on work boots but forgot to take off the Rolex.

The diesel option is not cheap, requiring you to check a box with the number $9695 next to it. If you're looking at this truck seriously, you own something that requires this sort of towing capacity.

One of the first things you should look for in a used diesel truck is the mileage. That may seem obvious, as most people are aware of the importance of a vehicle's mileage. However, it's worth ...