I managed to spray some Fluid Film on the underbody of the van today. I bought a gallon of the stuff a while back (up until now I had been buying spray cans of the stuff). It is a nice feeling, and (to me) a nice smell to have the underside of van glistening with the stuff.

prelim pics (no underbody shots yet) here:

http://shufti.wordpress.com/2012/10/11/vanagon-fluid-film-doesnt-taste-that-bad/

alistair