As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 5804 -ATB- CREW PERFORMED AIR TURN BACK TO LAS DUE TO LEFT ENGINE OIL TEMP HIGH IN THE YELLOW RANGE. CORRECTIVE ACTION: REPLACED AIR/OIL COOLER VALVE, THERMOCOUPLE, LUBE SCAVENGE PUMP AND #4 BEARING SCAVENGE VALVE. ENGINE HIGH POWER RUNS GOOD.