I need to flush my heater core with no power and no motor in the wagon. My question: I know there is the mechanical cable actuated valve that mounts on the firewall. Are there any other valves (electric?) in the short loop that makes up the two hoses in the firewall and the heater core? I haven’t been able to find anything that says there is but wanted to check. Also, does 1/2-3/4 of a quart seem about the appropriate volume of that loop?
Mike
Mike