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Old 05-29-13, 06:55 AM   #7
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Aluminum does corrode. It is very susceptible to galvanic corrosion. That's one of the reasons you see anodes on boat out-drives. If you don't have them on a boat the aluminum out- drive will look like a half dissolved Alka-Seltzer in a few years. Don't try to paint or coat it because it will simply begin to corrode under the paint and corrode at a higher rate. The only thing you can do is clean it off with a high quality aluminum wheel cleaner and with some elbow grease polish it. Test a small section first, some commercial aluminum cleaners are so strong they can darken the aluminum.

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