As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING MAINTENANCE ON AIRCAFT, MECHANIC DISCOVERED OIL LEAK COMING FROM THE AREA OF THE OIL COOLER. PERFORMING PRESSURE CHECK ON OIL COOLER AND FOUND OIL COOLER LEAKING AT SEAM ON TOP. THIS IS A WEAK AREA ON THE OIL COOLER, COULD BE CAUSED BY VIBRATION.