[bad_religion_au]

that's your .... sh!t i knew the pipe name, it's to do with having blowby

they can suck oil up via the hose on the rocker cover and suck this oil into the intake manifold, ... i think it could be it, or put up with a couple of drops on the ground... the hose is to stop a vacum forming in the crankcase and sucking the seals to death