I've gone back 15 pages reading everything I could see on the topic, so I figure I can start again. Wife has a black 2004 Acura RL. It has been washed with terry cloth bath towel rejects for 2.5 years. I've told her that we cannot do that any more and have introduced her to the two bucket, Grit Guard, MF, blot don't rub philosophy. There are swirl and scratch marks on the paint (of course, you say). In this new enlightened age I'd like to try to recover. Although I have some Z5 I figure that cannot possibly cut it, so to speak. I tried Meguiar's Swirl Remover by hand on a patch. Better, but nowhere near good enough. I guess at this point I don't expect to get to virgin paint, but can you give me a product and/or technique or doc to read that might work under these circumstances? I have an ACDelco PC, but I must admit I'm a little afraid of it and I suspect it is too cheap a tool for a good job. Any help appreciated. Thanks very much.