I just took to my car with UPP using a yellow pad and PP with a white pad. As my paint is single stage, a lot of paint comes onto the pads, which, although a bit scary at first, I am told is normal. The gray pad with AIO was not too bad. Problem is when I go go clean them up, all but they gray pad are still pretty discolored with red paint. I washed them with warm water and dishwashing liquid, then tide. No more paint comes out of them. Is it okay to still use them for another(clearcoated, black MB E500) car? It's no problem if I need to use them only for the Porsche, but I was curious. Also, for those familiar with polishing single stage paint, how long can I use the same pads on the car without switching to a new pad or cleaning it before proceeding(which would really slow things down). I only did the roof and these pads were really red.