As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE ALTITUDE, FL310 RIGHT ENGINE OIL PRESSURE DROPPED TO 111 PSI. ENGINE OIL PRESSURE RETURNED TO NORMAL DURING DESCENT WENT TO 123 PSI. ENGINE OIL LEVEL CHECKED ONCE AIRCRAFT WAS ON THE GROUND AND FOUND ENGINE TO BE CONSUMING OIL. ENGINE CHANGED.