As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, FL 120, OIL TEMPERATURE RAISED. AFTER 6 MIN OIL TEMP RAISED AGAIN EVEN BY REDUCING THE POWER SETTING INTO THE RED BAND. TEMPERATURE GREATER THEN 125 DEGREE C. THE CREW DECIDED TO SHUTDOWN THE ENGINE AND DECLARED EMERGENCY. TROUBLESHOOTING PERFORMED. BYPASS VALVE REPLACED.