Thanks for the responses. The smell seems to be getting into the intreior of the car through the heating system. Is this possible or am I imaging it. I washed the motor with degreaser at the carwash. The engine appears clean. Keep in mind that this car is otherwise MINT, everything works, and it runs and drives like new with 117,000 mi. I get this smell when the car is heated up and only when it's stopped, like at a stop light. Thanks for any help ya'll can offer.