ANALYSIS OF MANUFACTURER'S INFORMATION:THE TURBO DIESEL ENGINE ACCOUNTS FOR OVER 80% OF THE DIESEL EQUIPPED SUBJECT VEHICLES.WINNEBAGO STATES THAT POSITIVE CRANKCASE VENTILATION OBSTRUCTION, PARTIAL AIR FILTER OBSTRUCTION,OVERFILLING THE CRANKCASE, DEFECTIVE O RING SEAL IN THE BRAKE MASTER CYLINDER TO BRAKE BOOSTER JOINT, AND A DEFECTIVE TURBO FEED BEARING SEAL MAY CAUSE OIL TO BE FORCED INTO THE TURBOCHARGER INTAKE. WINNEBAGO BELIEVES THAT THE ISOLATED OCCURRENCES ARE INSTANCES OF OWNER ABUSE OR LACK OF PROPER MAINTENANCE.ANALYSIS:REVIEW OF WINNEBAGO'S RESPONSE TO THE OCC SPECIAL ORDER AND THE ODI COMPLAINTS INDICATES THAT NO SAFETY DEFECT TREND IS DEVELOPING. THREE OR FOUR YEARS OF VEHICLE USAGE/EXPOSURE HAS RESULTED IN ONLY 3 REPORTS OUT OF NEARLY 7,000 VEHICLES (0.04%).THIS RATE AND REVIEW OF THE REPORTS, SUPPORTS WINNEBAGO'S POSITION THAT THE PROBLEM IS ISOLATED INSTANCES OF MAINTENANCE PROBLEMS.===