Back in '98 I had the aluminum factory intake on our Chevelle glass beaded as opposed to sand blasted. It stayed excellent all these years and some brake cleaner on a rag cleaned up any mess that got on the aluminum. None of the white chalking ever showed up on the surface and the car was in unheated storage in the winter. I've seen all too many clear coated intakes turn yellow after a while especially around the heat crossover. Despite all that I have heard about good products, I wouldn't waste my money on paint. Personal preference of course.