Try it. No Muss, No Fuss. Boeing had it developed for corrosion protection.
It's mainly used to protect Electrical Components...BUT it Don't care,It'll protect whatever it's sprayed onto!
http://www.boeshield.com/
http://www.amazon.com/Boeshield-T-9-Premium-Metal-Protection/dp/B001447PEK
Boeshield T-9® Was developed by The Boeing Company for lubrication and protection of aircraft components. It is a combination of solvents, lubricants, and waxes designed for penetration, moisture displacement, lubrication and protection. Boeshield T-9® dries to a thin waxy film that clings to metal for months. It will loosen rusty and corroded parts and is safe on paints, plastics, and vinyl's. Boeshield T-9® comes in a variety of sizes from the industrial gallon sized to a convenient 1 oz. drip bottle. We feel we have the best product of its type on the market. If you can find a better penetrating lubricant and protectant, let us know, and we'll refund your purchase price.