Both my original and the replacement turbos were good initially but later allowed oil to accumulate in the inlet tract, probably as the bearings lost their initial tightness and could no longer contain the oil that didn't drain away quickly enough.
The revised drain kit cost me $154 last August (perhaps discounted) so cheap enough as a precaution except that I have no feel for the cost to fit it. It only guarantees that oil cannot pool in the drain and that an ineffective scavenger pump cannot interfere with the ability of the oil to drain.

