Wow, sorry for your loss. I had a C5 RS6 (aka "The Red Dragon") and loved that thing dearly. Although the trans failure concern forced me to sell, but it will always be one of my favorites.
Surprised regarding the oil separator, have you posted your issue on Audizine at all? I'm sure that group would be very interested to hear this story. I had a C6 S6 for about a year, and read about turbo failure... once the warranty ran out, I traded it in for the M6.
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