As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE: ETOP, RT ENG OIL PRESS FLUCTUATES BETWEEN 12-45 PSI FOR PAST 5 HR OF FLT OIL TEMP NORMAL (100) OIL QTY STDY (16) AT NORMAL CRUISE WENT INTO RED BETWEEN 1-8 PSI. DIVERTED TO MHT. ENG IND NORMAL ON DESCENT AND APPROACH WHEN THRUST WAS IDLE, NO ENG SHUTDOWN NECESSARY. FOUND C/P OFF OIL PRESS SW. CLEANED AND RECONNECTED. RAN ENG OIL PRESS CK GOOD AS PER 767MM 79-32-00-5.