What was found
LOW OIL PRESSURE/IFSD DURING CLIMB, A LOW OIL PRESSURE OCCURRED AND THE ENGINE WAS SHUTDOWN. THE ACFT RETURNED TO THE POINT OF DEPARTURE FOR AN UNEVENTFUL SINGLE ENGINE LANDING. DURING SUBSEQUENT GROUND RUN, THE OIL PRESSURE DID NOT REGISTER AND THE RUN ABORTED. FURTHER INSP REVEALED OIL IN THE EXHAUST. THE ENGINE IS BEING REPLACED.