Most people pump diesel without thinking about what's in the nozzle, but the stuff has a long journey before it hits your fuel tank. Diesel doesn't magically come out from underground — it's ...

Diesel engines power more than you may realize. While diesel was once considered a useless byproduct of the crude oil refinery process, it's now responsible for powering everything from freight trains ...

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 ...