Join Date: Jun 2005
Location: Collinsville, IL
I use WD-40 to lube the door hinges on every vehicle after an oil change, and it doesn't hurt the paint inside the door (which never gets waxed on the work beater). Just be sure to wash your car afterwards. It's also good for cleaning up a rim when a brake line blows...and for cleaning your toolbox/toolcart after a messy job.