The Gibbs stuff must be good from what I've read.. and I'll mention that the salt water and humid salt air marine environment is around 10 times more corrosive and destructive to aluminum, magnesium, steel, electrical switches and contacts, than anything cars put up with.
Red can CorrosionX is made for marine use and it is the best all around.
CorrosionX
Blue can CorrosionX is made for the aviation industry and it's the only stuff that currently meets the U.S. military's tough, new MIL-PRF-81309F Type II performance requirement and is currently approved by all major airframe manufacturers and recommended by the Joint Council on Aging Aircraft (JCAA), whose testing proved it to be more than twice as effective as any other product in its class.
CorrosionX Aviation
CorrosionX for Guns
CorrosionX Heavy Duty
Just a FWIW that there's other aerosol spray or pump bottle anti corrosion lubes out there that are probably quite superior, easier to buy one can at a time locally in a store, and cost less than Gibbs.