Performed cooling maintenance on two straight cool systems. Checked all electrical, mechanical and performance of both systems. Cleared and treated the drain lines and washed both outdoor coils. I found that the condenser fan motor for the system #1 is leaking lubricant. I informed the customer and presented options for repair. She chose to have the motor replaced at this time. I replaced the motor and cycled power at the thermostat. No other issues were found. Both systems are operational at this time.