What was found
FLT 879 - RNO-SJC - DURING CRUISE, THE FLIGHT CREW NOTICED THAT THE OIL QUANTITY ON NR 2 ENGINE WAS STEADILY DECREASING. THE CREW DECLARED AN EMERGENCY AND MADE A PRECAUTIONARY SHUT DOWN OF THE NR 2 ENGINE. DURING APPROACH THE OIL QUANTITY RETURNED TO NORMAL. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT AT SJC. THE NR 2 ENGINE OIL FILTER WAS INSPECTED AND NO DEFECTS WERE NOTED. THE ENGINE AND OIL QUANTITY INDICATION OPS CHECKED NORMAL. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)