rust prevention on unpainted parts

[robert weeks <robert@woozy.com>]

Hello,

I just bought a rebuilt brake MC, all nice, new and shiny. I left it out on
the porch last night and this morning it already had a thin film of rust on
it. It's been raining here and it's pretty humid. What's the best way to
protect parts like this from rust? I figure paint is a no-no, since it will
be in contact with brake fluid. Will wax work, or is there some other
accepted method of protection?

TIA,

Robert Weeks
Durham NC
1969 Midget
http://www.woozy.com/midget/