After the rough removal of rust with a wire brush and EVT. Abrasives and then wipe / blow the means to generate good protection film. However, follow-up treatments are always required - so look Against time. Once the rust has stated, it is naturally always difficult to permanently stop the rust. Although the protective film prevents the rapid oxidizing at the surface, but the chemical reaction is often not visible in the rear region of the cavity. In any case of rust corrosion is proceeding no longer quickly.