How often should the coolant be replaced in a newly purchased car?
2 Answers
Under normal circumstances, the replacement cycle for car coolant is every two years or 40,000 kilometers. Additionally, if the coolant changes color or sediment appears, it also needs to be replaced. Methods to determine if coolant is low: Observe the coolant warning light on the dashboard. If it lights up, it is likely due to low coolant, though it could also be caused by excessively high cylinder temperature. Check the coolant reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and add coolant promptly. Check the water level markings on the coolant reservoir. The coolant level should normally be between the maximum and minimum marks. To determine if coolant is low, check the markings. If the coolant is below the minimum mark, it indicates a deficiency. Coolant replacement cycle: For vehicles that operate for long periods, such as taxis, high-quality coolant should generally be replaced once a year. For vehicles with shorter operating times, replacement can be done every two years or every 30,000 kilometers. To prevent excessive foam formation, which can reduce the heat exchange efficiency between the coolant and engine components, ensure the product is within its validity period when adding it. Long-life coolant can remain effective for up to three years. If suspended particles, sediment, or signs of deterioration or discoloration are found in the coolant, replace it immediately and clean the system.
When I first bought my new car, I was also curious about when to change the antifreeze. I asked the car salesman, and he said the original factory antifreeze in new cars is of high quality and can generally last two to three years or 50,000 kilometers before needing a change. However, this isn't absolute—it depends on your driving environment. For example, where I live in the south, summers are extremely hot, so the antifreeze degrades faster and might need checking as early as a year and a half. The reason is, antifreeze doesn't just regulate temperature; it also protects the engine from rust and clogging. If not changed in time, the cooling system's efficiency drops, and the engine can overheat, leading to major problems. Once during a maintenance check, a mechanic reminded me that if the fluid color turns dark, it's time for a change. New car owners are advised to regularly check the fluid level and clarity under the cap, maintaining the manual-recommended level to easily avoid trouble. Don't delay too long—spending a little now can save you from major repairs later.
