I did not think that anyone questioned whether the turbo had oil running threw it or not, at least I did not, but since the turbo is part of the complete running system of the entire engine and it is not a seperate entity, it leaves alot of room for error, by just asumming to be the turbo right away, even if it looks and seems to be the only reasonable answer, but since this is an engine with more than likely alot of miles on it, than the door is left open to the possibility of many other working parts, that can produce smoke and the use of oil consumption, such as blow by on the rings, a bad head gasket, a cracked head, a plugged egr valve, a warped head, a worn cam, a worn or cracked oil journal, and many other possibilities, if you are short on cash, then start looking for the cheapest possible solution, this does not in any way mean your turbo is not bad, this just means that, if you have more time than money, than just do not assume. unfortunately, this is automotive's we are talking about, to were something simple can be mistaken for something much worse and cost you a fortune, and leave you with the same problem. if you can, do some testing on it yourself. ask some shop mechanics for advise, it is free.