As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ONLY 30 HOURS OF OPERATION WITH NEW STYLE SEAL, SEAL BEGAN TO DETERIORATE AROUND OUTPUT SHAFT SEALING SURFACE INTO OIL CAUSING OIL COLOR TO CHANGE TO BLACK. ACCUMULATION OF RUBBER SEAL MATERIAL ON CHIP PLUG DETECTOR FACE CAUSED CHIP PLUG DETECTOR TO BECOME INOPERATIVE. REPLACED SEAL