What was found
ACFT PERFORMED AN UNSCHEDULED LANDING, DURING CRUISE THE ENG OIL FILTER RT LIGHT TURNED ON WITH AN OIL TEMP INDICATION OF 60 CENTIGRADE DEGREES AND OIL PRESSURE INDICATION OF 60 PSI; THE EICAS MESSAGES ENG OIL FILT R AND MX MESSAGES 79-31452, 79-31-31462 AND 79-31472 WERE SHOWN. THE FLIGHT CREW PERFORMED THE QRH 7.20 PROCEDURE, CONFIRMING THE FAILURE. DURING MX REVISION, THE FIM 79-21, TASK 802 WAS PERFORMED CONFIRMING THE FAILURE; SO THE RT ENGINE SENSOR AND OIL FILTER WERE REPLACED IAW MM 79-21-07; ALSO, OPS TEST WAS PERFORMED IAW MM 71-00-00, ALL CORRECT.