Why is it that the replacement antifreeze is 8 liters by default?

Factory setting should be added according to the set capacity, and antifreeze should not be added too much or too little.

When the engine temperature is too high, the pressure of the cooling system will increase. At this time, the cooling liquid will pump the partially expanded cooling water into the expansion pot through the exhaust pipe above the radiator to maintain the normal pressure of the cooling system and prevent the pipeline interface of the cooling system from leaking due to excessive pressure. The antifreeze in automobile cooling system works circularly in a semi-closed system, mainly including engine cooling water channel, cooling water pipe, radiator, water pump, warm air water tank and so on. Antifreeze circulates in this small environment to dissipate heat and provide heat for warm air.