So I have the PS dash panel – 04392-2 / C8WY-6504392-D, the chromed and black-painted plastic behind the padded trim panel – out of my car while waiting on some parts and decided to wash it in mild (dish) detergent and water. There appears to be a thin layer of yellowish something on it, and it’s softening and sloughing off with the wash water. Is this a protective covering – lacquer or varnish maybe? – or just ~50 years of collected oil, etc.? Any thoughts? Not much I can do about it at this point, just wondering.
Thanks.