What you took out could be corrosion buildup. I'd have to see it up close to know for sure. But if the engine wasn't acting up, I wouldn't worry about it.
The pooled oil could be a leak(valve cover maybe?) Or it could be someone spilling. Keep an eye on the gauge or the level. When yo put it back together, get some oil leak check dye and borrow/rent a black light from the parts store. Pour the dye in with the oil, runt he engine at idle or just a little over for a few minutes, and slowly run the black light over the engine. Any leaks will show up as bright fluorescent green or yellow.
If there's a machine shop near you, and it's affordable, have them magnaflux the manifolds. That will tell if you there are any hairline cracks.
Saturday, December 10th, 2011 AT 7:29 AM