You might already know that gasoline and diesel engines both operate using the same four-stroke cycle: intake, compression, power, and exhaust. However, a key difference between gas and diesel engines ...

A diesel engine is simultaneously incredibly simple and incredibly violent, using compression as a means of ignition. This is because of the properties of diesel fuel: Namely, diesel is less volatile ...

How big is Ford's lineup of diesel trucks for the new year?

Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.