If you're the type that loves to keep a clean car, chances are you've popped the hood and given your engine a thorough scrubbing. From degreasing to gingerly rinsing it with a hose and scrubbing it ...

Back in college, I worked one of my summers at a car wash. It was the ideal place for a teenager: I was in an unsupervised, dripping-wet cavern full of expensive Mercedes-Benzes and Land Rovers that I ...