What was found
THIS FLIGHT WAS A VERIFICATIONS FLIGHT FOR RT ENGINE OIL LOSS. CREW NOTED THAT THE RT ENGINE WAS AGAIN LOOSING OIL. FLIGHT DIVERTED. AFTER THE PREVIOUS FLIGHT, EIGHT QUARTS OF OIL HAD BEEN ADDED TO THE ENGINE. MAINTENANCE PERFORMED TSM TASK 79-00-00-810-813 AND COMPLETED THE NR BEARING COMPARTMENT BREATHER CHECK. NO DISCREPANCIES WERE FOUND. THE ENGINE WAS OPERATED FOR APPROXIMATELY FORTH-FIVE MINUTES WITH NO OIL LOSS. THE AIRCRAFT WAS RELEASED FOR THIS FLIGHT. MAINTENANCE REPLACED THE DEOILER DRIVE SEAL. ENGINE CONTINUED TO LOSE OIL. THE RT ENGINE WAS REPLACED.