Changed my chain tensioner today as per vantaam5's instructions. Was surprised to see the old tensioner looked like it is in excellent condition on my 125k motor. However, the story doesn't end there... Noticed a lot of oil in the intake tract and filter box. Looking up old threads seems to indicate this is a problem with the Vanos o-rings.
I had changed the solenoid o-rings to Dr. Vanos o-rings about 6 months ago, so there is always a chance I screwed something up. However I see no external leaks from the solenoid covers, there are no codes and the car runs fine.
I guess I'll have to order some new o-rings and pull those solenoids again. Any other suggestions?