[Zuber]

No. Are you sure it's oil? Could be brake fluid (clutch fluid).

If it is oil, it could be coming from a couple of places.

Engine oil being blown back from the engine (leaking oil pan, front cover)...
Engine oil leaking from rear main seal.
Tranny fluid leaking from front seal.

You should be able to tell the diff b/t tranny and engine oil (smell is different).