I don't know this to be a fact, but I was told that the inner and outer panels were made from slightly different alloys. If that is true, then the problem will go on forever.Hey all, I have an 04 F150 Lariat. The aluminum hood has some raised areas of corrosion along the front edge. Does this require a special type repair ? If you can share some tips on how to make this repair I'd really appreciate it.
Interesting. Never heard that before. The story I always heard was that the hoods were installed unpainted and went through the line where there was still spot welding being done on other parts of the truck. No idea if that's true. Probably isn't.I don't know this to be a fact, but I was told that the inner and outer panels were made from slightly different alloys. If that is true, then the problem will go on forever.
Since most of the corrosion that I see seems to happen in the same areas that rust happens (wheel arches, tailgate lips, hood fronts) , I think the galvanic corrosion you mentioned is more likely. The initial corrosion lets more moisture and salts get to the now bare aluminum in the same collection areas as any other metal. If it were the different alloys, I think there would be an even amount of corrosion everywhere that the two alloys touched each other.Interesting. Never heard that before. The story I always heard was that the hoods were installed unpainted and went through the line where there was still spot welding being done on other parts of the truck. No idea if that's true. Probably isn't.
I didn't think two aluminum alloys were dissimilar enough to react that way. I've seen 3003 and 5052 or 6061 together and they don't do that. Interesting if that is true.