Let me add a note of reality thiWD40. I was at Moffett field with the new F3H Demon breaking in a new Sqn in 1958 when the Allison rep said
some friends of his had brewed up great stuff for anticorrosion. He got the sqn to buy a bunch and they used it liberally and it did stop corrosion. Later the O&R deopot got all upset as they had a terrible time getting it off to repaint. I used it on my pistols and found that with time it gummed things up. Needs to be used with care. It uses Menhadden fish oil + solvents.