Got bus last year so am a novice.
After reading the wiki and comments ( great help and advice on here) I bought waxoyl to treat and protect the metal , I was to expose, from rust. Started on LHS vertical seam between door and pillar


Rushed out and managed to get some primer etch primer, so ok for now

Question is though what rust cure/protection and what filler to use.
Advice and suggestions will be greatly appreciated
Thanks for reading
Peter