Hello everyone, After research in the forum I have unfortunately found nothing and now turn to you with a new topic. Since August I am the owner of a Phaeton Bj 2012 approx. 70,000km, long wheelbase. (As a preliminary information about which car my concern revolves around) My previous flicker had considerable problems with rust etc. on the underfloor. I would like to counteract this circumstance in time and conserve the underbody. Have you already had experience with it? What must be considered? Wel I am looking forward to receiving a lot of feedback. Thank you very much. Greetings in round