Performed heating maintenance. Upstairs unit checked out fine. No issues with the furnace. I did jumper w1 and w2 together to allow for high stage heating. Downstairs is the system with issues that will show up in the future. The coil is leaking refrigerant. Coil is from 2006, condenser is 5 ton r22 13 seer from 2006 and the furnace is from 2000. The indoor motor for. Downstairs furnace is leaking its lubricant. Gave homeowner repair options but I would encourage system replacement due to potential for compressor failure and other failure inside of furnace that could happen.