I drive a syncro westy but this thread should ring true for
anyone with a bus that would like to drive in winter who is
worried about rust.

I am in a bit of a unique situation at the moment. The
propane tank is out, and the saddle gas tank that I'm having
put in under the passenger sliding door is not installed yet.
Additionally, there is some work that requires the removal of
the driveshaft. This leaves the bulk of these sections free
of obstructions.

To me, this is the perfect oportunity to sandblast or
wirebrush and then coat the entire middle section of the van
with POR15. Does anyone see a problem with doing this? My
main concern is trapping moisture.

I think it would be way too much work to effectively coat
underneith where the floorboards meet the frame (if I'm wrong
tell me), and I can't see an easy way to finish the inside of
the framerails (again let me know). These are two stumbling
blocks but even with these limitations as long as none of the
existing drainholes were blocked wouldn't this be a pretty
good thing to do if I were so inclined?

Yes the middle section is just one part of the van, but I
figure I could do this in stages, slowly applying POR15 to
the entire underbody of the van. I am also thinking about
extending up the side of the van to coat the rocker panels of
course this would all be topcoated to prevent UV decaying the
POR15.

Thoughts?

Thanks,
Chris