TL* THE CONTACT OWNS A 2006 BMW 750LI. THE CONTACT STATED THAT THE EXHAUST SYSTEM EMITTED WHITE SMOKE WHILE AT A STOP. THE VEHICLE WAS TAKEN TO THE DEALER TO HAVE A DIAGNOSTIC PERFORMED. THE DEALER ADVISED THAT THE HEAD GASKET SEAL FAILED AND CAUSED ENGINE OIL TO LEAK INTO THE PISTONS. THERE WAS ALSO ENGINE OIL LEAKING INTO THE VALVES, WHICH CAUSED PREMATURE ENGINE OIL CONSUMPTION THAT BELLOWED WHITE SMOKE FROM THE EXHAUST SYSTEM. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 73,000 AND THE CURRENT MILEAGE WAS 74,000.