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  #16  
Old 04-19-2009, 12:52 AM
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Originally Posted by Abadjay View Post
I took out my battery on the ol' SDL and she had a bunch of leaves and flower petals under there. I vacuumed it all out and found that there was this discoloring under there. I am inclined to think it's rust, but at the same time, I hope that it's just plain normal and happens after 20+ years...Does anyone know what I should do about this? It's gotten onto the hood as well...
Naw dude, that's just exposed metal where the paint has failed from the acid.
I'd treat the metal with some baking soda and verify there is no acid remaining and clean up the surface rust with a wire brush or rotating wire head on an angle grinder and treat the metal with good quality primer and repaint it.
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  #17  
Old 04-19-2009, 04:24 PM
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Originally Posted by vstech View Post
Naw dude, that's just exposed metal where the paint has failed from the acid.
I'd treat the metal with some baking soda and verify there is no acid remaining and clean up the surface rust with a wire brush or rotating wire head on an angle grinder and treat the metal with good quality primer and repaint it.

Agreed, no need to cut that out.
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  #18  
Old 04-20-2009, 12:26 AM
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make sure the rust is not the kind where the metal is weak. poke at it with a screwdriver. if it gives, the metal is beyond repair. but from what the pics look like, it looks like acid that's eaten through the paint and moisture+air created the rust.

if space allows, take a cup brush on a drill to it and take off as much rust as possible. take it back at least 0.5 inches around the rust. Go to HD, get a product called "Naval Jelly" and a metal etch product (there's so many out there, but I can't recall a brand name). Follow the directions for both products. And only THEN do you put primer and paint on it.

If you have a lot of this kind of rust, i highly recommend the POR-15 ***system*** and not just the POR-15 product. If you want to make anything last, prep work is everything.
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