As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRECAUTIONARY SHUTDOWN DUE TO DECREASING OIL PRESSURE, DROPPED BELOW 30 PSI WITH INCREASED BREATHER TEMPERATURE, ENGINE OIL PRESSURE LOW LIGHT ON WINDMILL TIME 1 PLUS 20 OIL PRESSURE ALWAYS 10 TO 15 PSI. FOUND OIL LEAK AT NR 1 AND NR 2 OIL BREATHER LINE. REPLACED GASKET, LEAK CHECK OK.