What are the consequences of adding too much car antifreeze?

[Matilda]

The consequences of adding too much car antifreeze are: the pressure will increase after the antifreeze expands, which may cause the antifreeze to overflow. Therefore, car owners should not add too much antifreeze. The full name of antifreeze should be antifreeze coolant. The function of antifreeze is to cool rather than prevent freezing. The engines used in cars are water-cooled engines, which rely on the continuous circulation of coolant in the engine to dissipate heat. There are two circulation paths for the coolant in the engine: one is the large circulation, and the other is the small circulation. When the engine has just started and has not reached the normal operating temperature, the coolant undergoes small circulation. At this time, the coolant does not dissipate heat through the radiator, which allows the engine to reach the normal operating temperature faster.