What is the normal water temperature for diesel vehicles?

1 Answers
MacLayla
07/30/25 2:25am
Water temperature is optimal between 70-92°C. When reaching 70-80°C: the thermostat is half-open, allowing coolant in the engine water jacket to flow partially to the radiator through the half-open thermostat space, achieving a semi-circulation state. When reaching 80-92°C: the thermostat fully opens, enabling coolant in the engine water jacket to completely circulate to the radiator and back through the fully open thermostat space, realizing complete circulation. The significance of thermostat operation: it constantly monitors the coolant temperature in the engine, maintaining water temperature within the ideal range of approximately 80-90°C, ensuring optimal engine operating temperature conditions.
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