Lots on this I know, but looking for advise...I get a thick, strong smelling smoke on cold start up but it is only occasionally. Seems if I drive the car a lot, is subsides but not sure of that. Don't drive the car every day for the most part and seems to happen if the car is only driven a couple times a week? I have read all about the air/ oil separator (AOS) issues, which sound possible and during my last oil change, my mechanic mentioned that there was a "slight oil leak at the breather tube" which i assume is related to the AOS. Any advise or sure way to diagnose would be helpful. Shop wants a good chunk of labor $$$ to fix the breather tube issue and replace the AOS. I see the part is about 100 bucks....thx for any advise...