We may receive a commission on purchases made from links. The engine bay under the hood is one of the dirtiest parts of a daily-driven car. But it's also one of the most neglected places to clean.

Looking at the before and after shots, it's hard to believe this is the same engine bay. It took a lot of elbow grease over a period of about four weekends to get our Road Runner's engine compartment ...

Keeping a clean engine bay is as important as washing the exterior of your car, and just as easy with a few simple steps. If you drive an older car and have never washed underneath the hood, engine ...