Performed annual heating maintenance split upflow American standard system 4 yrs garage. System is zoned. Tested zoning working. Filters 14-25-1, 20-25-1. Cleaned burners and flame sensor. Cleaned air intake. Blower capacitor is leaking dielectric oil. Cleaned up oil to track part. In range for now. 10. Tested system operational. Inspected control board looks ok. Checked electrical connections all wiring tight at this time. Found furnace doesn’t have a gas drip leg, not to code.