What was found
FLT 7331 - SEA-ORD - NR 3 ENGINE EXCESSIVE OIL CONSUMPTION 1 QUART PER 5 MINUTES. WAITED UNTIL QUANTITY DROPPED BELOW 1 GALLON, IT DID. USED CHECK LIST LOW OIL PRESSURE QUANTITY WHICH TRANSITED TO INFLIGHT ENGINE SHUT DOWN. OIL REACHED ZERO AT 1740Z, SHUT ENGINE DOWN. DIVERTED TO BIL. REPLACED OIL FILTER AND O-RINGS, REINSTALLED, TORQUED AND SAFETIED. PILOT RAN NR 3 ENGINE LEAK CHECK OK. SERVICED NR 3 ENGINE TO FULL. CONTINUED TO ORD. (M)