TL* THE CONTACT OWNS A 2003 BMW X5. THE CONTACT STATED THAT WHILE DRIVING 35 MPH THERE WAS SMOKE COMING FROM UNDER THE HOOD AND EXHAUST PIPE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS ADVISED THAT THE OIL SEPARATOR WAS LEAKING AND DRAINED ONTO THE EXHAUST PIPE AND ENGINE ABNORMALLY, CAUSING THE FAILURE. THE CONTACT STATED THAT THE FAILURE WOULD ONLY OCCUR IN COLD TEMPERATURES. THE OIL SEPARATOR WAS REPAIRED. THE MANUFACTURER WAS CONTACTED WHO OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 74,200.