'94 mini S with 40k miles. I noticed spotting on the garage floor last week and took it to the dealership. They said it was a leak from the power steering hose and replaced it.
Spotting continued. Took it in again. This time they problem was determined to be a leaking rear main seal which resulted in fluid being leaked all over the sub frame.
Hopefully the leaks have stopped. At least it was still under warranty because it would have cost big bucks to replace the main seal (remove drive shaft, transmission and clutch).