check it out, drain:
there are my turbos a when i installed them over a year ago. afaik, they didnt have issues then with oil drain, possibly because of less boost but that's not the point. these turbos i have (which are in the process of being changed to the new exhaust housing design and new actuators, and of course new oil drain fitting) have the oil drain/feed that the original design had.
heres another view (same day, the install day
)
and from the top, so you can see the feed
i'd honestly post more but i want to save them and new pictures ive taken/will take for a thread when i get the car back. then ill dyno and update said thread.
edit: i should add i was running an RR OCC from about when they released it to until it failed (started to leak) and am currently running a BSH OCC. thought it may be pertinent in this thread.