Thanks!I had the identical thing under my car.
Ended up being a SMG line had split.
My pump would run all the time trying to pressurize.
And it would leak onto the floor.
They had to drop my tranny to fix it.
Hope yours works out better
I have just noticed the same leak.Just picked up the M6 from the dealer. The Fluid Leak ended up being coolant leaking from the "radiator outlet temp sensor." It was a pretty easy fix.