It is a 2007. I also put wynns system cleaner in it so I don't know how much of the smoke is caused by that also. I have not seen any symptoms as yet to the head gasket. The oil leak is near the bottom corner of the intercooler but the oil is definitely not leaking from the intercooler and if it was it would be a major concern due to the amount but the good sign is that I have absolutely no problems when driving and the turbo works exactly as it should.