Diesel doesn't magically come out from underground — it's engineered through a complex refining process that involves many ...

Renewable diesel (RD), dubbed HVO (hydrotreated vegetable oil) by producers, is hailed by its supporters as a climate-friendly alternative to carbon-intensive fossil diesel. RD is a complex biofuel ...

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.

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 ...