Thanks Roger. I got less details but the same basic story from a tech at Bob's BMW; great customer service over the phone btw. Informed me my next step should be to start working my way through the various seals to verify how far the DOT4 got. Sounds like the two week upgrade/repair project I had in mind for my bike has now become a winter long project. Time to start reading up on how to pull the gear box ... good times.