As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED ELECTRICAL AND OIL SMELL IN THE COCKPIT AFTER TAKEOFF, WITH THE ENGINE STARTING TO RUN ROUGH. PRECAUTIONARY LANDING CARRIED OUT. POST-FLIGHT INSPECTION REVEALED NO COOLING IN THE ENGINE. THE OVERFLOW VESSEL FULL AND THE TEMPERATURE TRANSMITTER BLOWN APART.