As you all know, most Proton cars has this "disease" of rust appearing on the roof of the car. It is due to the glue that is used to stick the roof to the frame that is too "salty".
http://photos10.flickr.com/11737281_bc6a96289c_m.jpg
see that white cover. That is what I want to spray ( now so ugly because it start to crack) . The problem is that I always wax that area and the paint will sure...