Black Residue
#1
#3
If the product has cleaners in it, what you see may just be oxidation. It should diminish when the rubber/vinyl is clean. If it keeps coming that may be bad.
#4
http://www.aacamuseum.org/store/product.aspx?id=164
on the rubber molding around the window. (just did one window)
07 truck, and the moldings havent had any kind of other treatment other than when washing the truck. ( so no 303 protectant or stuff of that nature of any kind since new)
#6