by AUTOMAN » Thu Jan 04, 2007 6:17 pm
I am going to strip the blue HB right back, I have started using it on the roof and it works great. make sure you follow the instructions and be patient as that gives the best results. Then rub back and the rust will just dissappear. I have even seen it take surface rust off and leave bear metal behind rather than turning the metal black. If you only have stone-chips, then you may be able to get away with patching in with a touch up pen.
Ian.