A clay bar is a detailing enthusiast's best friend. Yet many drivers don't know what a clay bar does for a car, where and how to use it, or even what it is. Clay bars for auto detailing are not ...

Once you learn how well a clay bar works, it's a tempting tool to use. If it makes paint feel brand-new, why not just use it everywhere? That's because some surfaces don't get cleaner when clayed — ...