What was found
(CAN) DURING FERRY FLIGHT, FOLLOWING AN ENGINE CHANGE, THE PILOT REPORTED LOW OIL PRESSURE ON ACFT CRUISE. THE PILOT ELECTED TO SHUTDOWN THE ENGINE AND ACCOMPLISHED A SUCCESSFUL SINGLE ENGINE LANDING. POST FLIGHT INITIAL INSPECTION SHOWED NO SIGN OF EXTERNAL OIL LEAK BUT REPORTED THAT NO OIL WAS OBSERVED ON THE OIL SIGHT GAUGE AFTER LANDING. THIS ENGINE WAS INSTALLED ON THIS ACFT AFTER THE ENGINE WAS REMOVE FOR LOW OIL PRESSURE. INVESTIGATION ON GOING.