TL*THE CONTACT OWNS A 2006 FORD F-350 SD. WHILE DRIVING 35 MPH, THE CONTACT NOTICED A LARGE AMOUNT OF BLUE SMOKE COMING FROM THE REAR OF THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY STATED THAT THE TURBO CHARGER NEEDED TO BE REPLACED. THE VEHICLE WAS PREVIOUSLY SERVICED FOR THE FAILURE, BUT IT STILL PERSISTS. PRIOR TO THE FAILURE, HE NOTICED THAT THE VEHICLE WOULD DRIVE VERY SLUGGISH. THE CURRENT MILEAGE WAS 27,853 AND FAILURE MILEAGE WAS 16,000.