As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OIL QTY ON RIGHT ENGINE WENT TO 4 QTS ABOUT 3.5 HOURS INTO FLIGHT. EVENTUALLY DECREASED TO ZERO OIL QTY ABOUT 1.5 HOURS LATER. OIL PRESSURE DECREASED TO 35 IN DESCENT, NEVER ANY LOWER. NEVER GOT ANY EICAS MESSAGES OR SECONDARY INDICATIONS. REMOVED AND REPLACED AIR/OIL SEPARATOR PER AMM 79-21-13-4. DMS SENSOR TESTED GOOD PER AMM 71-00-00-5 TEST 18, AIR OIL SEPARATOR AND DMS SENSOR LEAK TEST GOOD PER AMM 71-00-00-5 TEST 5. A/C OKAY FOR SERVICE.