Originally Posted by 
Graeme
				 
			Off topic, sort of, but do people recall the new 3.0 L320 that blew lots of smoke when the secondary turbo was used that multiple new turbos and scavenger pump didn't fix, so LR replaced the engine?  This was before the redesigned drain that bypassed the scavenger pump.  The scavanger pump draws from a sealed reservoir in the sump via a pipe through the block/sump mating face on which an o-ring seals the pipe inside the sump.  My bet is that the o-ring was missing on that engine allowing the scavenger pump to suck air which then caused the drain to overload the turbo seals.  That the pipe is described in the parts catalogue as a crankcase ventilation tube may not have helped.