As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED FINDING AN OIL LEAK ON RT ENGINE DURING PREFLIGHT. ENGINE WASHED AND RUN, OIL FILTER FOUND CRACKED AND LEAKING AT THE WRENCH LUG FLANGE ON TOP OF THE FILTER. FILTER APPEARED TO BE OVERTORQUED UPON REMOVAL. FILTER RETAINED FOR WARRANTY AND QUALITY INSPECTION BY INSTALLER OR MFG. (K)