I read threads until I've totally confused myself! I've got a Sterling Grey Z4 (which I love) and as with some previous vehicles I've owned, after several washes, I can now see a myriad of chips that weren't previously evident. I'm certain, therefore, that the previous owner must have used some technique to disguise these chips and other imperfections. Can anybody tell me what are the recommended "preparations" out there and how should they be used? I've heard people talk about Poorboys and Autoglym Super Resin Polish but do these just "shine" the paint or attempt to fills chips etc? Any advice would be much appreciated. Thanks