Here in northern NJ rust is a no charge option right from the dealer. When they use to use a mix of sand and crystal salt on the roads rust was slower at forming. Approximately 8-10 years ago they stated using a liquid salt brine on the roads before the snow, which many times didn't materialize. So we had wet roads with liquid supper corrosive salt. And even if it snowed the slush was brine soaked and it got into all the vehicle crevices also. Pick up trucks seem to be the most prone to severe rust early on. I had 3 that severely rusted within 8 years, all 3 bought new. Our 2005 Explorer developed severe rust/rot on the rear passenger fender and the passenger rocker panel is showing rust forming. However these seems to be common areas on this vintage Explorer. My 1996 Contour usually spends winter parked till spring in a semi-heated garage. It developed some paint bubbles on the lower front passenger wheel well fender. I'll take care of that shortly.
Whimsey
Whimsey