Cooling systems on old tractors featured heavy cast-iron radiator tanks attached to thick brass cooling cores. Many early models relied on simple thermosiphon cooling systems that circulated water naturally without a mechanical water pump, using temperature differentials alone. These massive cooling systems prevented engine overheating during long summer days spent dragging heavy plow... https://click4r.com/en/blogs/old-tractor-before-buying-best-deals-buying-guide