In a message dated 98-05-17 07:59:12 EDT, GMBulley@AOL.COM writes:

<<  What's a good way to clean the underside of the van, to get off all
  > the dirt and stuff, besides using the hose and just blasting it off.

  Start with a foaming engine degreaser, then hose it off.  Great for
  finding leaks since you're starting with a clean "slate." >> >>

actually - some foaming engine degreasers contain solvents.....in this case,
using foaming engine degreaser like "Gunk" or some other comparable brand,
will actually take the undercoating right off your van... ( not good ) ...i
would just use pressurized water. that's it..

we had a '78 Caprice wagon that leaked so much oil, the oil all over the
underside actually kept the floor from rusting...  ;<)

chris