What was found
(CAN) AFTER T/O, CLIMBING AND PASSING FL90, THE PILOT NOTICED A LOW OIL PRESSURE INDICATOR ON AND CAS MESSAGE. HE ELECTED TO SHUT THE ENGINE DOWN. AN UNEVENTFUL SINGLE ENGINE LANDING WAS THEN MADE AT THE POINT OF DEPARTURE. POST FLIGHT INSPECTION REVEALED NO OIL ON THE SIGHT GLASS & ON DIP STICK. THE MAIN CHIP DETECTOR AND OIL FILTER WERE CONTAMINATED WITH METAL FLAKES. THE ENGINE WILL BE REMOVED.