What was found
APPROX 1 HOUR OF FLIGHT NR 1 OIL QUANTITY STARTED TO DECREASE. ALL OTHER INDICATIONS NORMAL. AFTER APPROX 2 HOURS OF FLIGHT THE OIL PRESSURE STARTED TO FLUCTUATE PLUS OR MINUS 15 PSI. PER QRH THIS COULD BE ABNORMAL, DIVERTED TO KDEN. ENGINE NR 1 LEFT AT IDLE, NO SHUTDOWN. NO EMERGENCY DECLARED. OIL LEAKING FROM NR 1 STARTER DRIVE PAD AS PER AMM 71-70-00-6-05 CAPPED STARTER DRIVE PAD DRAIN AND STOWED CLOSED AND SECURED COWLING AS PER AMM 71-13-00. A/C LIMITED TO 10 CYCLES. REMOVED AND REPLACED STARTER DRIVE PAD CARBON AND MAGNETIC SEAL REF A300-600 MM 72-65-00-8-05. REINSTALLED STARTER REF A300 MM 80-13-01-4-05.