As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL PRESSURE DROPPED ON FINAL APROACH ON LEFT ENGINE. ENGINE WAS SHUT DOWN AFTER LANDING. OIL LEAK IN OIL COOLER INLET RING. PILOT NOTICED OIL PRESSURE STARTING TO DROP ON FINAL APPROACH. PRESSURE DROPPED TO 5 PSI AFTER LANDING ENGINE WAS SHUT DOWN. LEFT ENGINE WAS REMOVED AND REPLACED.