Re: coolant leaking from upper and lower rad hose connections

Posted by TxGoat On 2023/10/28 18:38:18

Be sure it is full of coolant. It should take about 4.5 gallons, maybe a little more with a heater. I'd run it at least long enough for the air coming through the radiator to get warm. Unlike some vehicles, my '37 120 does not show much of any agitation in the upper radiator tank when the thermostat is open, even at a fast idle.