What was found
AIRCRAFT WAS CRUISING AT FL 250 FROM KBFI TO KEUG. THE THROTTLES RETARDED FOR DESCENT & SMOKE BEGAN EMANATING FROM COCKPIT WEMACS. SMOKE LIGHT & BECAME THICKER, DID NOT OBSCURE VISION. AN OIL ODORL OBSERVED. SEVERAL SECS LATER OIL 2 LIGHT ILLUMINATED, PIC OBSERVED ENG 2 OIL PRESSURE ABOUT 17PSI. ENG 2 WAS BROUGHT TO FLT IDLE & CHKLIST CONSULTED. SIC OBSERVED OIL PRESSURE TO READ UNDER 5PSI. PIC OBSERVED THE OIL 2 LIGHT EXTINGUISH VERY BRIEFLY THEN ILLUMINATE STEADILY. 30-90 SECS AFTER OIL 2 LIGHT ILLUM, ENG 2 WAS SHUTDOWN. NO VIBRATIONS OR OTHER ANOMALIES OBSERVED. SMOKE DISSIPATED. AFTER AN UNEVENTFUL LANDING AT KUEG, PILOTS OBSERVED OIL TANK SIGHT GLASS EMPTY, & A NORMAL TO MORE THAN NORMAL AMOUNT OF OIL ON THE COWLING AREA. A SOAP WAS TAKEN, CHIP DETECTOR FOUND CLEAN, & A VISUAL INSPECT OF ENGINE & OIL FILTER SHOWED NO ANOMALIES. OIL TANK LEVEL CONFIRMED TO BE JUST BELOW THE SIGHT GLASS, 3 QUARTS ADDED TO BRING LEVEL TO NORMAL. AN ENG START ATTEMPTED & OBSERVED N1 WOULD NOT SPOOL ABOVE ABOUT 2% & LIGHT VIBRATION OBSERVED. SEVERAL SMALL METALLIC PIECES OBSERVED IN TAILPIPE & REMOVED AND RETAINED.