As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LISTED OIL COOLER WAS OVERHAULED. PROBLEM: THE THREADS FOR THE OIL TEMP PROBE WAS 40 PERCENT DESTROYED OR GONE. THIS AREA WAS NOT INSPECTED OR OVERLOOKED, WAS NOT POSSIBLE TO INSTALL OIL TEMP PROBE. RETURNED OIL COOLER TO OVERHAUL COMPANY.