My brand new lower hose on my Power Powagon collapsed while idling in traffic on hot day here in Florida. First time I've had this happen. I noticed when temp gauge shot up and I popped hood and no leaks anywhere. New radiator, milodon water pump, thermostat....everthing is new in cooling system so I figured it might be that.

Also, I've noticed our Charger police cars have spring in upper hoses (reverse flow I guess?), so that kind of defeats the theory they were for factory fill purposes.