well that's what my uncle and I have concluded cuz i'm burning oil at a more rapid pace now, becuase there are no leaks... I can tell you the most likely source of the problem. About 6 months ago I had put on a CAI and I was unaware of it at the time but the air filter broke apart to where it was suxing unfiltered air. It could be for a maximum of 3000 miles cuz I cleaned it every 3000 when I changed the oil... So anyways if you know any other problems I should look for...