Why Does the Coolant Disappear Without Reason?

[SanGarrett]

The reasons for the unexplained loss of coolant are as follows: The cylinder head gasket is corroded, leading to severe coolant loss; the oil holes on the cylinder head are blocked, causing insufficient lubrication of the rocker shaft and rocker arms, resulting in severe wear and increased engine noise. Below is additional information about coolant: 1. The car's coolant operates in a closed-loop system, with the water pump as the power source and the radiator used to cool the coolant. The main function of the coolant is to cool the engine, along with other roles such as rust prevention. 2. It is primarily composed of a mixture of water, ethylene glycol, propylene glycol, and other compounds, with specific boiling and freezing points. Particularly important is the freezing point of the coolant, which is generally below minus forty degrees Celsius.