What was found
#2 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. MXCTL REQUEST. ENGINE POWER RUN REQUIRED. GROUNDED - YES. COMPLETED STEPS 1 THRU 5 OF TSR. WHILE PERFORMING GVI FOUND LARGE AMOUNT OF OIL PUDDLING AT ENG TAILCONE TURBINE REAR FRAME AND SMALL AMOUNT ON GROUND. C/W B737-800 AMM 79-00-00-200-806-F01 AFT SUMP OIL SYS INSP STEP (1). FOUND OIL COKING (LARGE AMOUNT) AT OIL SUPPLY AND SCAVANGE TUBES. THIS CLEARS TSR712245.