As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN CRUISE THE PILOT REPORTED ENGINE OIL INDICATORS SHOWING OIL PRESSURE LOWER AND TEMPERATURE HIGHER THAN NORMAL. LATER UPON REMOVAL AND INSPECTION OF THE ENGINE OIL COOLER VERNATHERM IT WAS NOTED THAT IT HAD STARTED TO COME APART DUE TO THE FAILURE OF AN INTERNAL SNAP RING. THIS CAUSED A RESTRICTION OF THE ENGINE OIL COOLING SYS RESULTING IN THE ABNORMAL READINGS. WHEN THE VERNATHERM WAS REPLACED THE ENGINE OIL PARAMETERS RETURNED TO NORMAL.