As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS - DURING PDSC, NOTED OIL COATING #2 ENG FROM HEAT EXCHANGER AREA & OIL LEVEL AT -2. FILLED OIL & RAN #2 ENG @ IDLE FOR 5 MINS. DISCOVERED SIGNIFICANT OIL LEAK FROM HEAT EXCHANGER MATRIX. REMOVED & REPLACED #2 ENG AOHE PER AMM 79-21-51. OPS & LEAK CHECK GOOD. A/C OK FOR SVC.