I posted a while back about this Paint Guard crap the dealer offers for $800. They gave it to me free accidentally but I declined to have it applied. It's a garbage automatic application, similar to a tiny auto carwash. They spray the junk on everything (paint, windows, plastic, etc). It's hard to believe it's anything special if the application process is so crude.
If you do choose to do it, definitely clay your car. I had some water spots on the hood that I clay bar'd and it's amazing how well the clay works. The hood was as smooth as a baby's......cheek after the bar'ing.
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2013 Cadillac V-Wagon, RIP Z
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