My Rio engine G4ED has a cooling system I have not encountered before. The thermostat is connected to the lower radiator hose and the upper hose is unrestricted. The thermostat has a bypass valve that is attached to the bottom.
Does anyone know the purpose of the bypass valve on the thermostat? The thermostat is the same size as a small block chevy's except for the bypass valve. I'm not understanding the purpose of the bypass valve.
Does anyone know the purpose of the bypass valve on the thermostat? The thermostat is the same size as a small block chevy's except for the bypass valve. I'm not understanding the purpose of the bypass valve.