As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTICED OIL QUANTITY FOR THE NR 1 ENGINE WAS DECREASING AT A GREATER RATE THAN NORMAL. INDICATED QUANTITY HAD DECREASED FROM 4 GALLONS TO 2 GALLONS IN 5 HOURS FLIGHT TIME. PRESSURE AND TEMPERATURE REMAINED NORMAL. MAINTENANCE CONTROL ADVISED REDUCING POWER WHICH REDUCED CONSUMPTION. AIRCRAFT DIVERTED TO MSP. MAINTENANCE REPLACED THE NR 1 ENGINE.