As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. GROUNDED - YES. COMPLIED WITH ALL STEPS OF TSR AND ONLY LEAKAGE NOTED WAS SEEPAGE AT BASE OF EEC ALTERNATOR, (1 TO 2 DROPS PER 10 MINUTES). REMOVED AND REPLACED #1 ENGINE EEC ALTERNATOR O RING PER B737-800 AMM 73-21-08. LEAK CHECKED AND OPS CHECKED. NO CURRENT EEC FAULTS FOUND. FOUND OLD O-RING TORN, HARD AND RIGID. ETOPS GROUND VERIFICATION SUCCESSFUL.