You know how, in some post-apocalyptic movies, you still see people driving around in cars despite the lack of gasoline ...

Heed the advice on the cover of the Hitchhiker's Guide to the Galaxy and don't panic, at least not yet. Or, maybe just panic a little on the inside, but maintain your calm demeanor on the outside.

You don't want to put diesel in a gas engine. It's actually a major problem for your car, especially if you start the engine. Diesel and gasoline are totally different types of fuel, and engines are ...

Water injection is a tried-and-true method for cleaning up the combustion process in a diesel engine. It reduces both combustion temperatures and the resulting particular emissions. But what if you ...