Here in Hutchinson our city uses a redicouls amount of salt on the roads to prevent ice. That has been all well and good until now that I own a 84 Chevy... with NO RUST, and I want to keep it that way. And yes, I know that is ALMOST impossible, just because it is the body style that rusts out from looking at it it seems. So if I spray fluid film under the body and whatnot, will that help to prevent the body from rusting out? Thinking about giving everything on the underside of the truck a good coating of fluid film. Will this help at all, or just be a waste of time (and more importantly, money)?