With the amount of oil it sounds like he is talking about, it doesnt sound like a head gasket. I would think he would of seen some coolant loss or smelled coolant if it was. Maybe a valve cover gasket blew or something, I dunno much about this motors. I didnt read much in this thread but is the motor making any weird noises when running, like something is broke in there. I would be surprised if an oil line didnt pop off somewhere on the passenger side. Where do they tap the motor for a oil feed for the turbo?