What was found
AIR RETURN, DUE ON CLIMB-OUT APPRX 17,000 NR 2 ENG OIL TEMP REACHED 125 DEG, QRH ITEMS COMPLETED DISPATCH ADVISED. AIRCRAFT MADE AN UNEVENTFUL LANDING. REMOVED AND REPLACED FUEL OIL COOLER ON NR 2 ENG AND LK CHECK PER BOEING MM. OIL TEMP OPS CK NORMAL.