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 ...

Diesel engines are famous for reliability, longevity, and torque — until winter shows up and reminds them that chemistry still applies. Diesel fuel, which is pricey nowadays, behaves differently in ...

Learn how to cold start diesel engines after long winter storage. Watch tips, techniques, and precautions to get your engine running smoothly in cold conditions. Earth’s rotation is changing at a ...