Performed ac and furnace maintenance. On 5 year old Lennox unit. Checked and tightened electrical components. Checked and cleaned flame sensor. Inspected safety switches and flu vent. Checked and changed filter customer provided. Inspected drain lines and verified condensation was clear and free of debris. Tested indoor blower balance and inspected cleanliness, blower does not need cleaning at this time and is with in range and balanced. Cleaned outdoor condenser coils, measured tempeture splits . Outdoor fan motor is showing signs of oil leaking, did recommend costume continues maintenance at this time so we can keep an eye on it. fan is not over amping capacitor is within rang and contactor is operating. Unit is heating and cooling and operational upon departure.