Why Does the Thermostat Get Damaged?

[EzraFitz]

The reasons for thermostat damage: 1. Liquid fuel and water wash away the lubricating oil film on the cylinder walls and flow down into the oil pan, diluting the lubricating system's oil, which leads to premature wear of components such as cylinder liners and piston rings; 2. Due to prolonged warm-up time, the engine operates at lower water temperatures, causing combustion gases and condensed water on the cylinder walls to form acidic substances that corrode the cylinders. The thermostat is a valve that controls the flow path of the coolant. Its function is to remain closed when the car's temperature has not yet reached the normal operating temperature. During this time, the engine's coolant is circulated back to the engine via the water pump, creating a small internal loop that allows the engine to heat up quickly. Once the normal temperature is exceeded, the thermostat opens, allowing the coolant to circulate through the entire radiator circuit for a large loop, thereby enabling rapid heat dissipation.