As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALT LEFT ENGINE MASTER CAUTION, LEFT ENGINE OIL PRESSURE LOW ANNUNCIATOR ON. LEFT ENGINE OIL PRESSURE IS ZERO. LEFT OIL TEMP IS 20 DEGREES CELSIUS AND QUANTITY IS 17-18 QUARTS. SHUT DOWN BY SELECTION. REMOVED AND REPLACED ENGINE.