For future reference, I installed a M-20 Oil/Air Separator and cut down
belly grime by about 90% (my subjective guess) on my TR-182.

http://www.avweb.com/news/reviews/182522-1.html

"zatatime" wrote in message
...
Hi,

I'm looking for ideas on how to best clean the belly of my plane.
It's a Cherokee and is pretty greasy/grimy/dirty underneath. I'm
hoping to find something I can buy from a non-aviation source (like a
supermarket or auto parts store), and it would be Great if I didn't
need any water.

TIA for any responses.

z