Corrosion Block
You can buy here or at West Marine , Boat US and I'm sure at many Marine stores etc etc
I've never tried it on the pipework ....but that stuff is amazing ..but it isn't cheap .. $15-16 a can
That stuff unfroze a hinge on the "barn door" of my Tahoe (Dealership wanted BIG BUCKS to replace it )
Has anyone used the Woody Wax Metal Protector to seal it ... after applying the Woody Wax ??
I just spoke with them last week about another product ...Great people to deal with!!!