What was found
DURING PDC WALK AROUND FOUND PUDDLE OF POSSIBLE ENG OIL UNDER #2 ENGINE AND OIL UNDER COWL OUTSIDE. GROUNDED - YES. OPENED #2 ENG FAN COWL FOUND ENG OIL AROUND STARTER QUAD ADAPTER, CLEANED AND RAN ENG FOR 5 MIN, REINSPECTED AREA FOUND LEAK TO BE COMING FROM STARTER QUAD ADAPTER GEAR BOX SIDE, CLOSED #2 ENG FAN COWL. REMOVED AND REINSTALLED #2 ENG STARTER IN REF TO B737-800 AMM 80-11-01-400-801-F00 AND REMOVED AND REINSTALLED QAD ADAPTER IN REF AMM 80-11-02-400-801-F00 NO DEFECT NOTED LEAK CK GOOD INSPECTED AGB WEAR QAD ADAPTER MATED. NO DEFECT NOTED.