Hi guys, I got some information about the rust protection on youtube and on the Internet and now I’m looking for some methods that convinced me. But here are some questions to the experts, it’s about a Corsa (B) Bj 86. I want to fix it up, and it already has a lot of rust, but maximum level 2nd tailgate and windscreen wiper hole (very typical) I’ve already done. 1) I removed the wheel house trims because under it was rust. Level 2. First hand-trosted, Otravol put on it, good Let Branto Korrux move in, and then nitrofest. Do I have to grind this now, and paint and treat with clear varnish? It is anyway then under the wheel house trim, one does not see the places. Or is with the painting then the protection better, because yes rain water runs in. Or is it only “100% perfect” with sanding and painting ? 2) For the underbody protection I actually wanted to take the “old method” of Georg Holzknecht. Ox epoxy on it, 2 layers and then rope grease. I am superior, should I rather do it like this: hand-stud, Otravolöl on it and then Brano Kurrox. I have so much of it left. But NOT 3 in 1. Can you recommend this to me? Can I then leave it on the underfloor unground? After that also rope grease on it? Or better clear varnish spray? 3) Car of my wife is a Mazda 2, Bj 2014. Has hardly any rust down. But it starts somewhere. treat the completely still according to the method of 2 ? As prevention ? Or only the few rust spots . Georg Holzknecht says in a video, when the rust is there, it is already too late . Thanks for your answers . It also goes links , I can read then myself . Yes , I know , rust protection is also “great philosophy ” and an endless topic , nevertheless , I am interested in your opinions .