I fly R/C airplanes and awhile back in Model Airplane News or R/C Modeler,
can't remember which, They described a product called Corrosion X. As I
remember they tested it on dry steel, wet steel, and salt water soaked steel,
They ran three trials, one set of steel without protection, one set
pretreated with Corrosion x and one soaked and then treated with Corrosion x.
The product did indeed seem to highly limit corrosion even in the worst case
senario, applied after immersion in salt water. The untreated samples were
all highly corroded. I purchase some and use it to prevent corrosion in my
model aircraft engine during winter storage. Nitromethane fuel develops
partially into nitric acid during combustion and the Corrosion X protects my
engines bearings during the long storage time.