Anyone (besides me & Joel ;-) remember G. Matthew Bulley and his
Heat, Rust, Noise project on an '76 bus? He used Kool Patch
extensively in the inside and as undercoating. Here's a link
to a message of his in May '98:

I do, and in fact bought a can of the stuff. I didn't care for it, as I
recall it never really sets up, stays soft and gooey. Instead, I have used
3M rubberized undercoating in spray cans, both inside and out, on my buses.
Jeff
Jeff Stewart
fonman4277@earthlink.net
http://autos.groups.yahoo.com/group/vwcampersmidatlantic/