Hello, my friend got a new Smart ForTwo in crystal white (body panels) and black (tridion safety cell) in May. Now, of course, the white body panels have received tar stains and salt stains through the winter, which I want to remove now naturally in the spring and then want to seal vehicle again (preparation with Prima Amigo; sealing with SCG Barrier Reef Carnauba wax). My question is now, which means can I use here simply around the stains To choose from, I would have a Mercedes-Benz tea remover or Magic Clean cleaning knead (blue). I’m just afraid that the media will attack the plastic parts. What should be considered especially with the dough? Thank you for your help!