What was found
DURING CLIMB OUT, AT APPROXIMATELY 12,000 FEET THE CREW RECEIVED A (RT ENGINE OIL PRESSURE) WARNING WITH THE OIL TEMPERATURE INCREASING TO 153 DEGREES CENTIGRADE AND THE OIL PRESSURE FLUCTUATING BETWEEN 24-36 PSI. QRH WAS COMPLIED WITH AND AN EMERGENCY WAS DECLARED. THE AIRCRAFT DIVERTED AND LANDED SAFELY. MAINTENANCE REMOVED AND REPLACED THE RT ENGINE. OPERATIONAL AND LEAK CHECKS GOOD. AIRCRAFT OK FOR SERVICE.