I own a 91 940T with 173000 on it. I live in Missouri and today it was about 90 which is not all that bad. I was driving around town for about an hour today I get out and go inside to the bank. Left the car running for about 20 minutes, with no a/c running either. Well I come back out and go to back up and it kinda smells like burnt oil so I really dont think anything about it and then I see a faint puffs of smoke blow by me. I get out the car and go back to the tail pipe, and ever so faintly do I see lil puffs of smoke coming out. Instantly I think its the turbo but when I drive off, no smoke. It has been about 6000 on the oil change and I run 0-40 Mobil 1. I just changed the oil. The turbo is orginal, with the factory turbo + system on it. I dont get any smoke at wide open throttle or full boost. Is this little incindent a warning of a bad turbo or what. If anyone has any ideas to help me figure it out please lemme know. TTYL and thanks in advance fellow bricksters!!!!!