What was found
45 MIN AFTER TAKEOFF NR 3 ENG HAD LOST APPROX 1 GAL DOWN TO 1.5 GALS FROM 2.6 GAL AT TAKEOFF. OIL PRESSURE & TEMP WERE NORMAL ON NR 3. LANDED WITH GAL 1.25 GAL / 42 PSI PRESS / 10C OIL TEMP. ENT BY: 152952 RPT BY: 434068 SHGN 28MAR12 23:57 MEM U OPENED NR 3 ENGINE AND FOUND ABOUT 1 QT OF OIL IN COWLING. INSPECTED TAIL PIPE AND IT WAS CLEAN AND DRY. COULD NOT TELL WHERE LEAK WAS COMING FROM. ADDED 5 QTS OF OIL IAW MM REF 12-13-001-2-0. ENGINE NEEDS TO BE RAN TO INSPECT FOR LEAKS. AWAITING TRANSLOAD TO RUN ENGINE. REPLACED #3 ENGINE PER WC70T0001-03,WC70T000303, WC70T0301-03. OPS CHECKED GOOD. OK FOR SERVICE.