I have all the holes welded up on my windshield channel and am getting ready to weld in the lower cowl piece to replace the rust that was there before. There are a million different rust stopper paints out there, and I have listed 3 above, plus epoxy primer. I used the por15 on my battery tray. Hella glossy black, seems good but so far all it does is set on my shelf. I bought some rust bullet to use on my interior / trunk area after I am done in there, but so far it is still sealed in the quart can. Last weekend at the portland swap meet I see the zero rust distributer. Talk to him awhile and he shows me all the pictures of how his product is the best and I decide to buy a couple cans of spray paint since I didn't have any spray cans specifically for rusty areas. I ground down, wire brushed and sanded everything I could, used a rust killer / converter product to turn everything left black and then just sprayed my window channel with the zero rust. It is a flat finish. Didn't expect that. o No: So, is there any one product that will protect those window channels better than any other, or are they all selling the same snake oil, I mean paint? uzzled: I know that the only rust killer is to sand blast and remove it, but come on, not every project justifies that. I don't intend on stripping this thing bare and blasting it, there are just some areas that need a blast of paint and a little prayer. ray: Besides, this thing has lasted 40 years now, I just want another 20. So, for under the trunk deck, up inside the sail panels, under the dash, inner fender below battery tray, windshield channels and such. What is my best bet for areas that I can't reach well? I will reach up with a wire brush and rag to wipe down, but I need to spray over surface rust. What is best for to prevent future incursion?