I tee'd mine into the turbo oil return for the liquid side. Make sure it's all downhill...

One of the better dumb'n'easy mods is to open up the crankcase around #3&4. The block casting retains some obsolete "walls" that isolated the volume under one of those pistons (3, AFAIK) to make it into a poor man's secondary air pump in an old emissions scheme. This (a) can spatter some oil into the crank path, and (b) make for some real funny crankcase pulses for the pcv system.

Not responsible for advice not taken...