So far I don't have this on this truck, but I had a similar problem on my last truck. Acid rain is a nasty opponent, especially when you're talking about how it affects cheesy chrome-plating on plastic. I don't think anyone will argue that this is a lousy combination. The best defense is to keep a good level of wax/polish on the chrome and stay on it. My last truck was 11 years old with only the slightest hint of discoloring on the grille chrome from this. You just have to keep on it. Labor of love....
