Is a Coolant Temperature of 100 Degrees Normal?

[LaClaire]

Coolant temperature of 100 degrees is normal. As the name suggests, coolant is designed to keep the engine below 100 degrees to prevent overheating. Although inside the engine, prolonged operation can cause the temperature to rise, turning some of the water in the coolant into steam, thereby increasing its boiling point—some can reach 120 degrees or even 130 degrees (similar to the principle of a pressure cooker). The disadvantages of insufficient coolant leading to engine overheating are: Disadvantage 1: The combustible mixture, due to excessive temperature and insufficient air intake, reduces engine power. Disadvantage 2: The engine oil becomes thinner, with reduced viscosity, leading to poor lubrication, increased wear on parts, and higher power consumption. Disadvantage 3: Difficulty in starting the engine and knocking. Therefore, coolant is crucial for the engine. Without coolant, the operation of the engine would be unimaginable.