Here is a video clip on the Surmgeschutz III .found in a Russian bog, now running. I think it' s the same one which was found in perfect condition a while back. I would guess that the engine and drive line was still very good like the rest of it was. I think the clay, or whatever it is, must br oily and preserves very well
http://www.youtube.com/watch?v=8-F0w...eature=related