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Old 09-22-2003, 10:51 PM
abe abe is offline
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can u use ppg primer over ospho

I just stripped my cowl panel down to metal and cleaned it good and applied ospho to keep it from getting rust. Can i use the primers that ppg make to prime the metal surface over the ospho or do i have to use there ppg metal prep brand instead.

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Old 09-22-2003, 11:12 PM
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Yes, I would recomend a quick 400/scotchbrite scuff to make sure it's still clean with no film etc. Useing the 280/285 epoxy you'll be fine.
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Old 09-23-2003, 01:18 AM
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Milo. I got a quart of the corrosion resistant primer (ppg) . Is that ok to use? My friend said it will fill pin hole etc i guess because its kind of a thick primer.
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Old 09-23-2003, 02:29 AM
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If thats what you have on hand give it a chance. Remember a light mist coat at first and let it alone for 5 minutes. Then a couple wet coats. If theres a problem worse case would be sanding it down and recoating...

Here's a look http://www.a2zautoforums.com/showthr...6&page=2&pp=20
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Old 09-23-2003, 11:17 PM
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Ospho is good stuff. Yes, you can use the PPG over the top. Ospho will increase the adhering ability of the paint and it protects the metal from rust as well. Just make sure to use a good prep cleaner to remove any powdery residue. Go easy with a Scotch pad or you may remove the zinc coating Ospho leaves behind.
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