Yeah, I did exactly that. Cleaned it off with some degreaser and will continue to watch it closely.
When I caught it, It did seem to have a part of a drop forming... not visibly mind you. What we call "wetness" at the shop. I had just come back from work, and hadn't let it sit too long, so any drops that formed would have blown away under the truck. Tomorrow, I'll take a look and see if anything has dripped. And snap a photo for documentation while I'm at it.
-Dan