As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE WAS SHUT DOWN DUE TO OIL QUANTITY GOING TO 0 AND OIL PRESS FLUCTUATING. AT SHUTDOWN OIL PRESS WAS 15 PSI, THEN WENT TO 0. CLEANED AND INSPECTED NR 4 ENGINE OIL FILTER AND OIL SCAVENGE FILTER. NO METAL CONTAMINATION FOUND. REPLACED NR 4 ENGINE OIL PRESSURE RELIEF VALVE IAW DC8 MM 79-20-5.