Do you mean like this? http://westyventures.com/myrustyoldvan.htm

;-)

Road salt does add to it, after the seam sealant has begun to crack open.

JordanVw@AOL.COM wrote:
> i have a parts westy here that was let go so long, that water leaking in
> around the fill ports has actually rusted thru the side of the van where that
> horizontal beam is, a few inches below the ports.. (there is a reinforcement beam
> there on all vanagons)  there is a holizontal line of rot right thru the
> wall.. like karl says, the insulation gets soaked, sops up water like a sponge and
> never dries out, holds it against the sheetmetal and it rots right thru from
> the inside.   this is in addition to the rotting going on down where the floor
> meets the rocker panel seam..  water sits behind there and takes the path of
> least resistance, the rocker seam.