On Jan 27, 9:01 am, "Robert M. Gary" wrote:
On Jan 27, 8:28 am, "Tony Cox" wrote:

Could a prop seal really leak enough oil to make drops appear on the
windscreen? Usually prop seal leaks show up as moisture under the
prop.

As it happens, this is what happened to a friend of mine
yesterday (although on approach, not in cruise) and we were
debating what might be the proper response had an airport
not been within easy reach. The oil was more like filthy black
streaks, rather than "drops". Still, it was obvious what it was.