As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK DUE TO LOSS OF NR 2 ENGINE OIL QUANTITY. INDICATION BOXED "0", PERFORMED CHECKLIST NOTED OIL PRESSURE DECREASING; ENGINE WAS SHUTDOWN PERFORMED. REMOVED AND REPLACED NR 2 ENGINE PER WOA T/C 0105 AND MD-11 MM PROCEDURES. ACCOMPLISHED ENGINE RUN UP CHECK, ALL NORMAL. (CLOSED)