What was found
NR 3 ENGINE SHUTDOWN DUE TO OIL QUANTITY LOSS, CRUISING AT FL 330. NR 3 OIL QUANTITY STARTED TO DECREASE APPROX 1 QT PER 2 MINUTES. AT FIRST INDICATION OF SECONDARY CONFIRMATION COMPLETED SHUTDOWN CHECKLIST AND DIVERTED. SHUTDOWN TO LANDING WINDMILL 15 MINUTES, SHUTDOWN AT 37 PSI AND PRESSURE CONTINUED TO DECREASE TOWARD ZERO UNTIL LANDING. OIL ALL OVER ENGINE AND GROUND AT DIVERT AIRPORT. OIL PRESSURE AT ZERO 5 MINS AFTER SHUTDOWN. INSTALLED SERVICEABLE FITTINGS/HARDWARE AND PACKINGS IAW SMP. CONNECTED ELECTRICAL CONNECTOR AND SAFETIED. RAN NR 3 ENGINE IAW JRH. LEAK CHECKED GOOD, OIL PRESSURE INDICATIONS NORMAL PER JRH.