Haha, comforting to know I'm not alone. I have never been to NYC but I imagine the traffic would really get your X smoking. I have used a seal rejuvenator oil additive like liquimoly. I used an Australian brand, Nulon. It worked for 1-2k kms and then the smoke returned. To my knowledge you can only add one treatment per oil drain, so I'm waiting till the next to try Liquimoly