Do Face Seals ever self-clear?

I have recently picked up a little Bobcat 324 Excavator and just went through it with all the regular servicing. I'm trying to get on top of all the problems it has before it starts being used too much, as I know they will then just be accepted and never fixed.

I noted that one of the final drives had no oil in it and after replacing the oil I see it's leaking. Thinking back I remember seeing oil on the ground after unloading it and with it sitting in one spot for a few days, but don't...

Do Face Seals ever self-clear?

Do Face Seals ever self-clear?