What was found
DURING CLIMB OUT AT 10000 FT, NOTICED NR 1 ENGINE OIL TEMP CLIMBING RAPIDLY, WAS 95 DEG AND DROPPED TO 85 DEG IN ABOUT 3-4 SEC . THIS OCCURED THRU REMAINDER OF FLIGHT. ALSO THE OIL PRESSURE WAS ERRATIC FROM A HIGH OF 72 PSI- TO 66PSI. RETURNED TO FIELD. LANDING UNEVENTFUL. PILOT REPORTED NO MASTER CAUTION OR ENGINE MONITORING NOTIFICATION DURING EVENT. REMOVED AND REPLACED LT ENGINE OIL PRESSURE TRANSDUCER IAW AMM 79-31-01. FOUND REMOVED TRANSDUCER SHOWING 5 PSI W ENGINE OFF. PERFORMED OPERATIONAL TEST AND LEAK CHECK OF NR 1 ENGINE. IAW AMM TASK 79-31-01-400-801. OBSERVED NORMAL TEMPERATURE AND PRESSURE INDICATIONS. TEST PASSED. NO LEAKS NOTED. ACCOMPLISHED ADJUSTMENT OF 1/2 TURN INCREASE. IAW AMM 71-00-00-780-801.