What was found
(CAN) MULTIPLE OCCURRENCES ON THIS DAY AND PRIOR OF AMES UNABLE TO OBTAIN AN ACCURATE OIL LEVEL READING ON R/H ENGINE INCORPORATING SB7639. TEMPORARY PROCEDURES TO BLOW AIR BY MOUTH INTO THE OIL FILLER NECK VIA A TUBE RESULTED IN OIL BLOWING OUT OF THE FILLER NECK. THE SUBSEQUENT OIL LEVEL READING HAD NO OIL ON DIPSTICK. TEMP PROCEDURES REPEATED- STILL NO READING-DECISION WAS MADE TO DO A QUICK GROUND RUN FOR TROUBLESHOOTING PURPOSES. LEVEL WAS CHECKED AGAIN-NO OIL ON DIPSTICK. AT -25C OUTSIDE TEMP, AME TRIED TO SERVICE THE ENGINE OIL USING A FUNNEL-OIL OVERFLOWED OUT OF THE FILLER NECK ALL DOWN THE ENGINE AND POOLED IN THE COWLING. AME THEN UTILIZED A SYRINGE TO FORCE THE OIL INTO THE ENGINE 10CC AT A TIME- SAME RESULT OF OIL OVERFLOWING OUT OF FILLER NECK. A DECISION WAS MADE TO BRING A/C BACK INTO THE HANGAR AND REMOVE THE BALL VALVE IN FILLER NECK TO INSPECT FOR F.O.D. - IT WAS NOTED THE BALL STUCK IN THE CLOSED OFF POSITION EVEN AGAINST GRAVITY. THIS ACTION RESULTED IN A READING OF 2.5-3 QUARTS LOW. ENGINE WAS SERVICED TO MAX COLD LEVEL SUCCESSFULLY.