Nissan Repair Questions? Ask a Mechanic for Answers ASAP
more than likely if your burning alot of oil, then you have blowby at the oil rings.
well cylinder 6 could have had a tube seal leak as well.
all you can do at this point for such excessive oil consumption is perform a proper leakdown test. which may or may not show a leak. if there is a leak then you can pinpoint what its from obviously (rings, headgasket, valve seal, etc) but at the same time you can have good compression and still have oil ring issues. So it's simply a matter of ruling out other issues beforehand is all.