Heavy-duty pickups and long-haul trucks rely on torquey diesel engines that are more economical, reliable, durable, and have a more straightforward construction than a comparable unleaded gas engine.

The season is changing and there are telltale signs of colder temps everywhere you look. Sure, the leaves are different and there might be frost on the ground, but I’m really talking about cold start ...

When Arctic air settles in, drivers of diesel pickups and highway fleets learn quickly that not all fuels behave the same.