42 really useful cleaning hacks for your car that your mechanic does not want you to know

Take off bumper stickers with WD-40

So bumper stickers used to be cool, but do you really want everyone and their father to know that you love motley crue or that you love bacon to an extreme degree? Bumper stickers have super sticky glue, so taking them off usually requires you peeling off some paint. But no longer, as all you need to do is spray some WD-40 on the sticker, wait until it soaks into the sticker, and then peel.