As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT STATES THAT OIL TEMPERATURE DOES NOT GO ABOVE 140 DEGREES FAHRENHEIT IN-FLIGHT OPS. LYCOMING REQUIRES 170 DEGREES PLUS PER OPERATOR'S MANUAL. SUBMITTER FOUND SOME SILVER DUCK TAPE WITH A STRING COVERING AIR INTAKE TO REGULATE. AIR FLOW OVER COOLER TO ADJUST OIL TEMPERATURE.