X2... I encountered a customer w/ a Caravan w/ 3.8L that consumed about 4qts of oil in 3000 miles. They never check it.
No signs of oil leakage.
Pulled the upper intake, found a lot of oil residue in 2 of the intake runners more than the other 4... the 2 that were closest to the hose that connects to the PCV valve.
Also I pulled the EGR tube and there was TONS of burnt oil residue/tar like crap in it... the EGR valve was attached to the exhaust manifold that was on the same bank as the 2 intake runners being gunked up... not really significant... just confirms that a ton of oil was being burned in the combustion chambers.
I replaced the PCV valve and haven't heard back since... if I see the customer's car any time soon and this thread is still active I'll update it
