Not sure about all that for paint but I will say using baby powder on your weatherseals around the trunk lid etc is something I have heard works well for maintaining. I believe it is recommended by Porsche or ???.... someone....
That's an old school trick for sure.My bodyshop guy told me about it also said they used to do it on vettes all the time .Said it helps with swirl removal sounds more like it may hide the swirls .Maybe when i'm bored i will try it.
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