As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FIRST ROUTINE ENGINE OIL AND FILTER CHANGE, THE OIL FILTER WAS EXTREMELY DIFFICULT TO REMOVE FROM THE ADAPTER ASSY. SUBMITTER SUSPECTS CAUSE FOR PROBLEM: NO LUBRICATION AT INSTALLATION AS ENGINE WAS READIED FOR SERVICE. SUGGEST FOLLOW RECOMMENDED PROCEDURE PER MFG. SAME PROBLEM ENCOUNTERED WITH RIGHT ENGINE. (RIGHT ENGINE SN 676926, SAME TOTAL TIME).