As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN THE CLIMB THE RT OIL TEMP WENT TO 171C IN THE RED. THE CREW REDUCED POWER TO LOWER THE OIL TEMP AND THE ACFT RETURNED TO THE DEPARTURE AIRPORT. MAINTENANCE T/S DETERMINED THAT THE RT FUEL OIL COOLER WAS AT FAULT AND REPLACED THE UNIT. PN 4119T36P03, SN FAWB0431. PART TSN 20646, CSN 10511. ACFT TSN 21949, CSN 11052.