As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENGINE OIL TEMP ROSE TO 169 DEGREES C CLIMBING OUT OF FL180, COMPLIED WITH QRH PULLED POWER TO IDLE, TEMP RETURNED TO GREEN RANGE. KEPT ENG AT IDLE UNTIL LANDING. SHUTDOWN AFTER LANDING [EMERGENCY DECLARED -- ACFT RETURNED TO DEPARTURE AFTER T/O].