As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS IN DOWN WIND FOR LANDING WHEN STUDENT NOTICED 'WET' GEAR LEG AND WHEEL. UPON EXAMINATION, FOUND OIL COOLER SUFFERED INTERNAL FAILURE, LOSS OF SUBSTANTIAL OIL. SUBMITTER STATED ENGINE FAILURE WOULD HAVE BEEN IMMINANT. OUTSIDE TEMP 58 DEGREES.