[Lippyp]

We know a thing or two about rustproofing over here in the UK. My recipe would be. Underbody, steam clean, go over any surface rust with a wire wheel. Then zinc rich primer followed by a couple of good coats of chassis black paint (usually a synthetic enamel although theres a couple of good epoxy paints I may try on my truck when I get to that stage) Anywhere vulnerable to stone chipping like the inside of the wheel wells gets a coat of stone chip/underbody schutz, a flexible latex based product, then the whole lot gets a coat front to back of an underbody wax like Bilt-Hambers Dynax UB. All box sections like the rockers etc get a coat of a cavity wax like Bilt-Hambers Dynax S50. Bodywork just plenty of good quality wax. Make sure you wash underneath regularly to remove the salt.