Your car's windshield wipers are your first and foremost weapon against the accumulation of dirt, dead bugs, and other assorted grossness on your windshield. Not to mention the vital duty of clearing ...

New wiper blades often smear due to an oily, contaminated, or dirty windscreen (windshield), rather than a faulty blade.

The windshield wiper is one of those automotive-related things that has, well, not really changed much since it was invented. A motor makes the wipers move to provide drivers with a clear view ahead.