Thanks Richard, to do a proper flush, would you just put the lower hose back on without the thermostat, then run water thru the top hose? I was also wondering how much water should “flow” through the radiator with the hose. The hose I’ve been using has great water pressure, but it doesnt flow through the radiator fast enough, it seems somewhat weak coming through the lower hose. Either way, I guess it just needs to be flushed out like crazy