Why is the antifreeze decreasing?
2 Answers
The reasons for antifreeze reduction: Antifreeze is considered a consumable item, and under continuous high temperatures, it will evaporate to some extent. However, it could also be due to leaks. Damage to the radiator gasket, overflow tank, water pump mating surface, or loose pipe fittings in the cooling system may all result in antifreeze leakage. It is essential to promptly visit an auto repair shop for maintenance, as a lack of antifreeze can cause varying degrees of impact. If the antifreeze is insufficient (below the MIN mark), the primary issue is the lack of an effective cooling effect, which can easily lead to "boiling over" (excessive temperature) during high-speed operation. Additionally, the viscosity of the engine oil will decrease over time, leading to wear on engine components. If a leak or insufficient antifreeze is detected, immediate action must be taken to address the issue.
My old Accord also had the issue of rapid coolant loss last year. Upon inspection, we found a tiny crack in the radiator that only leaked when the engine was hot. The mechanic later said aging hoses could cause the same problem, especially plastic T-joints which tend to become brittle and crack. In winter, remember to check under the car for pinkish water stains after parking - coolant system hoses and water pump seals are common leakage points. The worst-case scenario is a blown head gasket, where coolant mixes with engine oil (look for milky foam on the oil cap - immediate repair needed). Pro tip: For cars over 5 years old, keep a bottle of matching coolant in the trunk and top up periodically before the warning light comes on.