Yeah, thats what i think also, but there is no signs of it any where. When the other turbo was throwing oil all over the engine, is it possible to have contaminated a sensor or something, would it smoke like that if it was running real rich? All this this has come about all of the sudden. When the other turbo started going out and acting funny, then when we put on the newer one it fixed the oil problem, but then the white smoke. It still has power and it dodesn't run bad at all. Just once in awhile it pours out white smoke that dissipated very quickly, no fuel smell or anything. Maybe i wuill have to bring it into a shop, shudder.