DaveGordon:

Consumption on mine is minimal unless on track. +1 for the replacement; Porsche wouldn't commit to that kind of expense unless they thought it was necessary.

you see, here is the strange thing. the PZ started out with 'this is almost a race car, so the oil consumption is normal' (which is total BS) to 'no worries, we provide you with unlimited free oil supply' (strange, no?) to 'we will lock the oil refill and then you come back when the warning sign lights up again, so we can check the km and report to PAG' (i refused telling them that i am a scientist and can keep track of km numbers) to finally 'if you want we can change your engine. how is in two weeks for you?'. apparently they got different instructions from PAG on how to deal with those matters. all in all, not a very convincing approach.