As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE FROM EKO, HAD A INTERMITTENT LOW OIL PRESSURE INDICATION ON LEFT ENGINE. RETURNED TO EKO. ADDED TWO QUARTS OF EXXON 2380 OIL TO LEFT ENGINE PER INSTRUCTIONS FROM MAINTENANCE CONTROL. AIRCRAFT WAS RUN UP TO 100 PERCENT ENGINE INSTRUMENTS SHOW BOTH ENGINES NORMAL AND STEADY. NOTE: ALSO ADDED ONE QUART OF OIL TO RIGHT ENGINE. LEFT ENGINE WAS AT ADD 3 BEFORE OIL WAS ADDED.