I had noticed my engine seemed to be smoking when cold more than usual this past fall. A post a while back talked about the air cleaner getting clogged w/ oil so while winterizing the motor today I decided to do some investigating. Upon removal of the air cleaner I discovered it had a fair amount of oil in it and I also discovered the filter sponge was falling apart and a piece was in the turbo! Think I found the source. I had planned on reconditioning the turbo this winter anyway.