As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL LEAK DISCOVERED AT THE ENGINE OIL COOLER AREA DURING ALF CHECK. AREA CLEANED AND INSPECTED, WITHOUT DEFECT. HOSES VERIFIED FOR TIGHTNESS, NO DEFECT. RUN-UP C/O, LEAK FOUND AT THE LOWER PART OF THE OIL COOLER AGAIN. OIL COOLER REPLACED, RUN-UP C/O, NO MORE LEAK. OIL COOLER SENT FOR REPAIR.