My latest concern- I have a very slow leak from my RH head cover gasket (I think) which occasionally drips onto the O2 sensor prior to the cat. I think it is a pretty common area for a leak, since I have read of others in the same place.
I just went for a long, fast drive on the autobahn (110-120 for over an hour) as soon as I pulled off the road, engine fan was blowing smoke from the RH vent. Not a lot, but enough to see from the driver's seat.
Can oil on the exhaust get hot enough to burn? Is this something which needs immediate attention, or can it wait a month or so?