Back from delearship. The service guy was in disbelief that there was still a leak, but he really couldn't say much more after I showed him the pictures I took and actually a video showing two drops of fluid falling within about 8 seconds of each other.

They gave me another 2011 328i loaner. As I was driving back home, the service guy called back saying the shop guy asked questions about possible air conditioning condensation being mixed with residual fluid. I stressed that was not possible. I referred back to my video and told him how I let one of the drops drip in my hand, it was pure oily fluid, not mixed with water. He replied "we'll fix it". We'll see

I'll update once I know more.....