You can clean the exterior of your car as often as you like, and nearly every time, there will probably be a chunk of gunk or smear of grime that makes you ponder its origins -- that is, until you become too disgusted by the thought. So you get the car nice and clean, and maybe go for a relaxing drive to celebrate a hard afternoon's work. But do you ever think about what your car looks like under the hood? And not just on the surface, but inside?
There are practical reasons, other than pride, to keep your engine clean. A dirty engine littered with debris and motor oil deposits will lose horsepower and run less efficiently. And though motor oil is the cause of a lot of engine buildup, part of its job is to remove and prevent that harmful gunk. In this article, we'll help you figure out how to get the most from your motor oil -- without leaving a lot of it behind.