If you have a diesel-powered vehicle that's been sitting unused for more than a few months, you might be wondering if its fuel has ended up going bad.

Diesel engines have some major advantages, like increased durability, greater fuel efficiency, and more torque than a gasoline equivalent. Like gasoline and kerosene, the fuel itself is refined from ...

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 ...