When to Add Antifreeze?
2 Answers
Antifreeze should be added when its level is below the standard mark. This liquid must also be antifreeze to ensure it does not freeze at low temperatures, as freezing can cause severe engine damage. Generally, antifreeze should remain unfrozen at least at -30 degrees Celsius. The coolant reservoir has MAX and MIN level marks. Add antifreeze when the level is below the MIN mark when the engine is cold. The amount added should be based on the reservoir's marks, ensuring it stays between MAX and MIN. Additionally, after a certain period, typically 3-5 years or 60,000-100,000 kilometers (depending on the vehicle model and manufacturer's requirements), a complete replacement of the antifreeze is necessary. Antifreeze prevents the coolant from freezing and cracking the radiator or damaging the engine cylinder block or head during cold winter parking. Antifreeze is not only used in winter but is required year-round. The engine and its cooling system are made of metals such as copper, iron, aluminum, steel, and solder. These metals, when in contact with water under high temperatures over time, can corrode and rust. Antifreeze not only avoids causing corrosion to the engine cooling system but also has anti-corrosion and rust-removal functions.
I've run an auto repair shop for decades and encountered many scenarios involving adding antifreeze. Generally, you should top it up when the coolant level is low – you can regularly check the markings on the overflow tank; if it's below the minimum line, it indicates insufficiency. Seasonal changes are critical moments, especially before winter, as antifreeze prevents freezing and pipe bursts. Additionally, during maintenance cycles, manufacturers recommend replacement or inspection every two years, which is the ideal time for refilling. Don't overlook details – incorrect mixing ratios can corrode engine components. I've noticed that high summer temperatures also lead to evaporation, so remember to add coolant when the engine is cold after driving to avoid burns from hot steam. Insufficient coolant levels may cause overheating, with repair costs easily running into thousands.
