yycwrangler, Howdy;
NO sandpaper! Use Scotchbrite pads, over a dozen years of corrosion control for aircraft.
domoarigato wrote:Have you tried gutter black streak cleaner or rv black streak cleaner?
Aluminum oxidizes, but doesn't rust.. forever and ever, Amen.
These can/maybe work, if not then try some Comet or other brand of cleaner. Warning,
once you break the protective coating that is on the Aluminum you will be chasing the
crud forever or until you sell it to someone else. One good way to prevent new corrosion
from forming would be to cover it with something like a paint that would also repel the
Sun's heat. More then a few here have used Henry's Tropical white with excellent results.
https://www.homedepot.com/p/Henry-0-90- ... /206030020Only a recommendation to consider.
hank
Striving for a less complicated life since 1949 ...
Every day I beat my own previous record for number of consecutive days I've stayed alive.