First, you should prepare the appropriate percentage of antifreeze solution according to the lowest possible temperature of the area at the coldest time of the day and night and the water capacity of the cooling system. This should be done according to the antifreeze usage instructions on the antifreeze can.
The tractor engine has a cooling system whose function is to transfer the high heat of the combustion chamber to the outside of the engine and regulate its temperature. Its service and maintenance will increase the life of the engine.