As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN CRUISE THE OIL TEMPERATURE CLIMB INTO THE RED ZONE. THE THERMOSTATIC VALVE WAS REPLACED AND A TEST FLIGHT WAS CARRIED OUT WITH THE ENGINE STILL OVERHEATING. WE REPLACED THE OIL FILTER ADAPTER P/N 75528 AND THE OIL SCREEN HOUSING P/N 69510 AND EVERYTHING RETURNED TO NORMAL.