The back story on this van is that it was originally from the northern woods, and spent alot of its time on unpaved dirt and sand roads.
Combine that fine sediment along with a perpetual oil leak and you get an interesting concoction if ick.
Icky, greasy goop.
And lots of it.
Plus side, it kept the bare steel/ crappily painted stuff from rusting too much.
Down side, I am on can 12 of engine degreaser, have gone through several plastic scrapers and wire brushes and have a long way to go on the chassis yet.
Super plus side- my bro Mcmo is doing a bunch of the chassis cleaning.