How to Check the Coolant Level?
1 Answers
When the engine is cold, the fluid level should be between the upper and lower limits for normal operation. The functions of coolant include the following four points: 1. Winter antifreeze: Prevents the coolant from freezing and causing the radiator and engine block to crack. The freezing point of the coolant should be approximately 10°C lower than the lowest temperature in the region to prepare for sudden weather changes. 2. Anti-corrosion: The cooling system contains components such as the radiator, water pump, engine block and cylinder head, and water distribution pipes. Due to the different electrode potentials of various metals, electrochemical corrosion can easily occur under the influence of electrolytes. Additionally, acidic byproducts formed from the decomposition of glycol-based substances in the coolant and acidic exhaust gases from fuel combustion may infiltrate the cooling system, accelerating corrosion. 3. Anti-scaling: The coolant reduces scale formation during circulation to prevent clogging of the pipes and impairing the cooling system's heat dissipation function. Care should be taken when selecting and adding coolant. 4. Anti-boiling: Coolant that meets national standards has a boiling point exceeding 105°C, compared to water's boiling point of 100°C. This allows the coolant to withstand higher temperatures without boiling, meeting the cooling needs of high-load engines to a certain extent.
