Try bolting some zinc discs to the body and chassis.

 

POR15 the frame and underbody. its like 35 bux a can but it works awesome.

POR= Paint Over Rust, but you dont need rust to do it, but it will bond under humidity or not, and keep your frame and what ever you put it on from rusting.

 

Get a beater and drive it in the winter. Otherwise, I don't care what you do, the salt will eventually eat your truck alive.

vmax84

 

you must be using the tiny cans cause its like $135/gallon.

 

nope saw it on one of the spike tv episodes on trucks, it was 35 bux and that covered the whole frame.