....
Having now seen the glorious oil-custard deposited in the catch can I must say that I'm rather glad it doesn't get recycled anywhere!
FFS.
Its only like that when water gets mixed with it from condensation building in the catch can from the warm oil.
KRL is confused. He is quoting references for what happens when the oil gets vented to the inlet manifold.
With either fix the oil doesnt get through the inlet, obviously, which stops carbon deposits building. But with the stage 1 fix, the oil goes nowhere apart from back into the engine through the other outlet to the sump. At this stage it is still JUST oil.