Coolant is a fluid that is essential to the proper functioning of your vehicle. It plays a crucial role in preventing the engine from overheating and protecting its components from harmful particles. However, this fluid is not designed to last forever and its quality deteriorates over time. It is therefore important to know when to change it in order to prevent any potential problems. In this article, we will explain when and how to change your car's coolant, as well as some tips to extend its lifespan.
When should the coolant be changed?
The recommended frequency for changing the coolant varies depending on how often you use your car. In general, manufacturers recommend changing the coolant every 2 to 4 years. However, this recommendation may vary depending on the annual mileage of your vehicle.
If you are a moderate driver, i.e. you drive about 10,000 km per year, it is recommended to change the coolant every 3 years on average. On the other hand, if you drive more than 10,000 km per year, it is better to change it every 30,000 km on average.
To find out the oil change frequency recommended by your manufacturer, you can consult your vehicle's maintenance booklet. It is important to follow these recommendations in order to maintain the performance and lifespan of your engine.
What are the signs that it is time to change the coolant?
There are several signs that may indicate that your coolant needs to be changed. If you observe any of these signs, it is best to act quickly to avoid any potential damage to your engine.
- The color of the fluid: If your coolant has a brownish tint, this may indicate the presence of impurities. In this case, a drain and flush are necessary to remove these impurities. On the other hand, if the fluid is clear, it may mean that it has mixed with engine oil, which also requires a change.
- Deposits on the expansion tank: If you notice mayonnaise-like deposits on the expansion tank cap, this may indicate that engine oil has mixed with the coolant. In this case, an oil change is necessary to remove these residues.
- Engine Light On: If the engine light comes on, it may indicate that the engine is overheating, which can be caused by ineffective coolant. Therefore, it is important to react quickly to avoid damaging engine components.
- Coolant light comes on regularly: If you have already added coolant but the light continues to come on, this may indicate a leak in the cooling system or overheating. In this case, it is important to check the coolant level and condition regularly.
It is recommended to regularly check the amount of coolant in your expansion tank, as well as its condition. This can be done at least once a year. Make sure that the amount of liquid is between the "minimum" and "maximum" marks on the expansion tank. If necessary, you can add liquid, but make sure that the engine is cold to avoid burns.
How to extend coolant life?
Now that you know when to change your coolant, here are some tips to extend its life:
- Bleed the cooling system: Perform regular purges to remove air bubbles from the system. This will allow the liquid to circulate optimally and avoid overheating problems.
- Check for leaks: Make sure there are no leaks in the radiator or hoses. If you find a leak, use a temporary stop leak product, but remember to have the leak permanently repaired at a garage.
- Performing the drain correctly: If you want to drain the coolant yourself, make sure you have the necessary knowledge and the right equipment to do it safely. Otherwise, entrust this task to a professional.
- Avoid using water as a substitute: Water cannot effectively replace coolant except in emergencies. Water tends to freeze in winter and corrode the cooling system. Always use a proper coolant.
