The normal level of engine coolant is situated between the highest and lowest levels on the coolant reservoir. If you accidentally add too much coolant, exceeding the maximum level, it typically won't have a significant impact.
During the vehicle's operation, the coolant can expand due to heating and overflow through the pressure relief valve. The overflowed liquid is not harmful, but it may leave some scale and stains. If you've added too much coolant, you can use a syringe to extract the excess coolant from the reservoir. When extracting, be cautious not to remove too much, ensuring that the coolant level doesn't fall below the minimum marking. Otherwise, the engine temperature may rise, potentially leading to overheating and engine damage, shortening the engine's lifespan.
Here are some important considerations when using and adding engine coolant:
1：After adding coolant, it's advisable to let the engine idle for a period. After a few minutes, check the coolant level in the reservoir. This helps prevent excessive evaporation of the coolant.
2：Ideally, use the same brand and color of coolant when topping up. Different brands and colors may have varying formulations, and mixing them can lead to chemical reactions, potentially compromising the coolant's performance or rendering it ineffective.
3：Coolant has a shelf life, typically around two years. Some may have a longer lifespan, up to three years. When adding coolant, check whether it has expired or is approaching expiration, and preferentially use coolant within its validity period.
4：Regular coolant replacement is necessary, with a recommended interval of around two years or every four thousand kilometers of driving. For commercial vehicles, the replacement interval may be shorter due to higher coolant consumption rates.
