Should the coolant in the Hongguang S be replaced directly or just topped up when low?
2 Answers
If the coolant in the Hongguang S is low, it can be topped up, but it is important not to mix coolants from different manufacturers. Since different brands of coolant have different formulations, mixing them can cause chemical reactions. Typically, coolant has an effective service life of two years. If it expires or appears dirty, it should be replaced. How to determine if the coolant is low: Check 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 engine temperature. Inspect 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 overflow tank. The coolant level should normally be between the maximum and minimum marks. To determine if coolant is low, observe the markings. If the coolant is below the minimum level, it indicates a shortage. Coolant replacement interval: 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 observed in the coolant, replace it immediately and clean the system.
Regarding the Wuling Hongguang S coolant issue, my advice is to both replace it regularly and top it up promptly. Unlike engine oil, which requires strict replacement based on mileage, coolant should be changed every two years or 40,000 kilometers because the corrosion inhibitors inside gradually lose effectiveness. You should frequently open the engine compartment to check the level in the auxiliary reservoir—if it’s below the Min mark, simply add the same color of OEM coolant. Never mix different colors for convenience, as this can trigger chemical reactions that clog the cooling channels. Last summer, my friend’s car overheated due to degraded coolant, costing over 3,000 RMB in repairs. In an emergency shortage, distilled water can be used temporarily, but the system must be fully flushed and refilled afterward.
