I understand what you are saying about the base/clear systems, but what if it's a single stage urethane paint like some of the older finishes? Wouldnt you need that extra layer of UV protection and some way to "seal" the paint? Just curious since most of the stock VW paints are all standard paint AKA no clear coat. And yeah, I know exactly what you mean about the dodge clear peeling. I have a 98 ram that this has just started with on the roof and hood.