Hey folks. Being a diesel mechanic I get pretty dirty at work, the other week before I left I had a brain fart and kept my work hat in which is covered in caked on grease, oil and just about every other fluid you can thing of, and clipped my headliner with it. Now there is a nice black grease line and I don't know what to do to get it out. Any ideas before I take brake clean and a rag and dab it? I really don't want my car smelling like a shop but if that's what it takes than so be it.