I bought some a little while back. I've used it on a few parts on a Roadrunner I'm working on. My only concern with it is that it will turn back into a liquid state when it's heated to about 120 degrees. Basically, same as when you applied it. As it's a very thin coating it still works fine, but I would think that dirt and grime would have a much easier time clinging to something like that. I put it on parts away from heat for that reason Maybe it doesn't make a difference.