As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED AN IN FLIGHT SHUTDOWN AND AN AIR TURN BACK DUE TO LT ENGINE OIL QUANTITY LOSS WITH OIL QTY INDICATION AT ZERO. MAINTENANCE FOUND OIL IN COWLING AND ON ENGINE. ENGINE CHANGE REQUIRED DUE TO ENGINE OPERATION WITH NO OIL PRESSURE FOR 3 MINUTES.