Seems to me this may have come up in discussion a long time ago. Do NOT use any brand of purple cleaner on your vehicles ID plates, either from the dealer or the factory. The black paint will wash off. I have seen VIN plates for old vehicles (i.e. Chevy trucks) that are sold blank- and you have your VIN etc engraved on it. Anyone do recreations of these? (i.e. sold by Craine M-M Sales).