Is it necessary to replace the coolant?

[VonKing]

Coolant replacement is necessary. The steps for replacing coolant are: 1. Open the vehicle's engine hood, and the coolant reservoir can be seen in the upper right corner; 2. Open the coolant drain plug under the radiator to drain the old coolant; 3. Add new coolant, tighten the cap, and the coolant replacement is complete. The functions of coolant are: 1. To provide anti-corrosion protection for the engine's cooling system; 2. To prevent water from boiling when the engine temperature reaches 100 degrees Celsius; 3. To prevent the formation of scale, thereby avoiding a reduction in the radiator's cooling efficiency; 4. To ensure the engine operates normally under low-temperature conditions.