MD-11
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Situational Awareness; Troubleshooting
Aircraft Equipment Problem Critical
Flight Crew Inflight Shutdown
Aircraft
On climbout; past 15;000 feet; number 2 engine lost oil quantity rapidly from 21 to 5; then slowly to zero. After complying with the QRH (Quick Reference Handbook); we consulted with Dispatcher and Maintenance Control; electing to continue engine operation; but when engine oil pressure started to fluctuate and then dropped from 60 to 28; the engine was shut down for a return to ZZZ. Fire/Crash/Rescue scanned the aircraft on the taxiway after an uneventful monitored; coupled approach to an auto land.
MD-11 First Officer reported loss of engine oil during climbout.