What was found
NR 1 ENGINE BURNED 1.5 QTS PER HOUR, THE FIRST 2.5 HRS. AIRCREW RECORDED ENGINE READINGS EACH 30 MINUTES IN FLIGHT. THE NR 2 ENG APPEARED NORMAL. MECHANIC SERVICED NR 1 ENGINE (3 QTS ADDED) TO FULL. PERFORMED GVI OF NR 1 ENGINE COWLING, DRAIN MAST AND TAILPIPE FOR EVIDENCE OF OIL LEAKAGE, NONE NOTED. ENGINE APPROVED FOR REMOVAL DUE TO HIGH OIL CONSUMPTION. COMPLIED WITH NR 1 ENGINE FUEL SYSTEM ON WING PURGING. ENGINE REMOVED DUE TO HIGH OIL CONSUMPTION.