TL* THE CONTACT OWNS A 2000 NISSAN ALTIMA. THE CONTACT STATED THAT WHILE TRAVELING 40 MPH THE CONTACT NOTICED THAT THE TEMPERATURE WAS ALMOST AT MAX. THE VEHICLE BEGAN TO RUN ROUGH AND SMOKE STARTED TO EMIT INTO THE VEHICLE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO STATED THAT THE ENGINE WAS NOT THE ORIGINAL EQUIPMENT AND THERE WAS NO COOLANT. AS A RESULT, THE ENGINE OVER HEATED CAUSING THE ENGINE BLOCK TO CRACK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE AND CURRENT MILEAGE WAS 200,000.