In the aviation sector, a product called " ACF50" is widely used for corrosion protection. (Apparantly the US Navy uses the stuff by the gallons on all of their aircraft carrier's planes)
http://www.talkaboutmotorcycles.com/...ges/25106.html
I bought a couple of aerosol cans and have coated just about all of my bike. It dries clear without leaving any residue or evidence of use. Claimed to last up to 2 years from time of application?
I would think that any small airport with at least one workshop hanger would be able to either direct you to a source or possibly have some that you could purchase.