As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF L/P 60152412, FOUND LARGE PUDDLE OF OIL UNDER #2 ENGINE AND OIL ON BOTTOM SIDE OF ENGINE COWLS. INSPECTED ALL DRAINS AND FOUND NO ACTIVE LEAKS. FOLLOWING A 10 MINUTE IDLE RUN NOTED FRESH OIL LEAKAGE IN THE #2 ENGINE PRIMARY PLUG ASSY, FROM THE FLAME ARRESTOR AREA. DUE TO OIL CONSUMPTION, RECOMMEND LUBE UNIT REPLACEMENT. GROUNDED - YES. REMOVED AND REPLACED #2 ENG LUBE UNIT. REF B737-800 AMM 79-21-01-000-801-F00 & AMM 79-21-01-400-801-F00. OPS & IDLE LK CK'D. GOOD.