What was found
PILOT PERFORMED EMERGENCY LANDING IN SAT DUE TO RT ENGINE ERRATIC OIL PRESSURE. INITIALLY WHEN LEAVING MMIO OIL LEVEL WAS GOOD. AFTER LANDING & CHECKING OIL IN KLRD IT APPEARED ENGINE LOST APPROXIMATELY 1.5 QUARTS. DURING CLIMB OUT FROM KLRD OIL PRESSURE DROPPED INTO THE YELLOW ARC. FLICKERED IN THE YELLOW ARC, & WITHIN APPROXIMATELY 2 MINUTES IT REACHED THE RED LINE AND STARTED PRODUCING THE OIL WARNING. FOLLOWED QRH PROCEDURE &PERFORMED RT ENGINE SHUTDOWN. AFTER LANDING, PILOT CHECKED THE OIL LEVEL & IT COULD NOT BE SEEN IN THE SIGHT GLASS. DETERMINED, DUE TO EXTREMELY HIGH OIL CONSUMPTION, ENGINE WOULD BE REPLACED. R & R RT ENGINE. ENG RUN CHECKS & LEAK CHECKS ALL GOOD. ACFT RETURNED TO SERVICE.