low chassis_8 plus passenger vehicles

The thermostat is equipped with a temperature-sensitive wax or liquid that expands and contracts in response to changes in temperature. When the engine starts and is cold, the thermostat remains closed, preventing coolant from circulating through the radiator. This allows the engine to reach its optimal temperature more quickly. Once the engine warms up to the predetermined temperature, the thermostat opens, letting coolant flow through the radiator to dissipate heat and keep the engine from overheating.


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