Especially after any high RPM driving, I have oil smoke coming from the right side exhaust pipe near they flex coupler just behind the engine. Since it only happens after high RPM conditions (read: high oil pressure), I conclude that it must be an oil line at one of the turbochargers. This has happened several times, but the oil level has not dropped noticeably.

I seem to recall a post a while back making reference to a loose bolt for an oil line in this location and this seems strangely similar. IIRC, said post also referenced how it could be corrected without removing the engine from the car. By the responses, this seemed to be a problem familiar to several members. I am unable to find this post now, despite about 30 minutes of searching and just randomly reading posts that lookrd potentially relevant.