Finally got to fire up the 9N last evening. Had mostly water in cooling system. New radiator and thermostat/hoses. After running engine for about an hour and a half, not idling, the lower radiator hose was barely warm. Some steam coming from top side of radiator with cap off (yes, was very careful). Warm air being blown out thru front. Engine block was hot but you could actually lay hand on it a second or two. Assuming the thermostat opened and was keeping cool. That lower hose not getting hot concerned me - or is the new radiator working that good? Do these engines run pretty cool? Thanks in advance for the input. Lots to learn!