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 ...

If you use diesel fuel in cold weather, it has a chance of turning into a gel-like substance. Gasoline doesn't have this problem, though. Here's why.

One of the most common mistakes at the gas station is accidentally filling diesel into a gas engine, or vice versa. The consequences are almost always dire, but what happens when you fill up your ...