Many semi-trucks are powered by diesel, but the recent cold has not been kind to that type of fuel.

If you’ve ever found yourself standing next to a diesel engine that refuses to start on a cold winter morning, you know the ...

When Arctic air settles in, drivers of diesel pickups and highway fleets learn quickly that not all fuels behave the same. Diesel can thicken into a waxy sludge that starves engines of fuel, while ...