How often is it best to change car antifreeze?

In general, antifreeze is replaced every 2 years or about 40,000 kilometers. Some luxury cars (such as Mercedes-Benz) will be extended, and the replacement cycle of antifreeze will reach 10 years or 200,000 kilometers. Vehicles that run for a long time, such as taxis, are also enough to be replaced once a year.

However, in the actual use of the car, there is generally no problem in changing it late, changing it for a year or two earlier, or driving tens of thousands of kilometers more and then changing it. When maintaining the car, you can take a look, as long as the coolant is not less than the minimum scale value (there is a max line on the water tank), and the temperature gauge of the water tank is normal, there is no need to replace it.

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Car antifreeze is one of the most important liquids in a vehicle, and vehicles are shipped with an adequate amount of antifreeze. Antifreeze is mainly responsible for the heat dissipation of the vehicle's engine system, maintaining the engine at the most suitable working temperature, if there is a problem with the antifreeze, the vehicle will not work normally, and the engine will be damaged in serious cases.

The main functions of antifreeze are antifreeze, cooling, anti-corrosion, and lubrication.

The antifreeze of the vehicle according to the model, the brand of the difference, the quality will be different, the service life is naturally different, some are recommended to be replaced once every two years, some do not need to be replaced for five or six years, some are recommended to be replaced when a certain number of kilometers are reached, and some manufacturers do not have a clear regulation of the replacement of antifreeze cycle.

For antifreeze replacement, we can follow the recommendations below.

1.Regularly check the level of antifreeze, below the lower limit, and replenish it in time.

2.Before the onset of winter each year, the freezing point of antifreeze is measured to ensure that the freezing point of antifreeze is 15 to 20 below the local minimum temperature.

3.According to the replacement cycle of antifreeze in the instructions of the car, it is generally two years, and some say 4-5 years or longer, just follow the owner's manual.

4.For those that do not explicitly require a replacement cycle, we can judge whether it needs to be replaced by observing the state of the antifreeze with turbid precipitation, or if the freezing point is too low.

5.The color of antifreeze may be different for different models and cannot be mixed.

Antifreeze is also called coolant, which means coolant with antifreeze function.

What it does is:

1. Maintain the basic stable temperature of the engine, prevent the engine from overcooling or overheating, and can also play the role of anti-rust and waterproof, and protect the radiator and cylinder;

2. If it is not replaced for a long time, it will deteriorate, the anti-rust function will be reduced, and a large amount of rust and dirt will be precipitated in the radiator, which will seriously lead to the puncture of the radiator pipe or the blockage of the core. So we recommend checking every six months and replacing it every 2 years or 40,000 km.

Car antifreeze is generally replaced once every two years, depending on the requirements of the model.

Ask the car owner, how often should I change the car antifreeze? I haven't changed it in over three years. Could there be any problems?

Automobile antifreeze is generally replaced every 2 years, 4-60,000 kilometers each time.

Of course, it can be decided to replace it according to the actual usage. If the vehicle is very sturdy, it needs to be replaced in advance. If the antifreeze is not replaced for a long time, the quality of the antifreeze will change, reducing its internal rust quality and causing damage to the radiator and pipes.

It will also affect the boiling point and freezing point parameters, and affect the antifreeze effect or cooling effect.

The replacement cycle of ordinary antifreeze is 2 years, and the replacement cycle of long-lasting antifreeze can reach more than 3 years. For the inspection of antifreeze, the first thing to do is to check the color and level of the antifreeze. If any suspended solids, sediment, or deterioration or discoloration are found in the antifreeze, the cooling system should be replaced and cleaned promptly.

If there is no problem, there is no need to replace it, and it is generally recommended to replace it within 3 years.

Different types of antifreeze should not be mixed to avoid chemical reactions, precipitation, or air bubbles, as doing so will damage the rubber seals, often resulting in water leaks at the pump's water seal and welds. Therefore, after the leakage of antifreeze, the antifreeze of the same brand should be replenished in time. If antifreeze of the same brand is not available, distilled or purified water can be temporarily replenished.

1. The composition of the coolant.

The concentration determines the performance of the coolant. Engine coolant is composed of ethylene glycol, anti-corrosion additives, anti-foam additives and water, among them, ethylene glycol is the core ingredient to expand the temperature range of the liquid, through the fusion with water, the high concentration of coolant can be 197 to -60 without boiling and freezing, however, such products are more expensive, so manufacturers will adjust the proportion of ethylene glycol in the coolant according to the region and the use of different uses. Different brands of models use different colors of coolant, pink, blue, etc., these are different color effects created by colorants, in order to be more eye-catching when the coolant leaks, and the color difference will also be very eye-catching to distinguish different products, to prevent the wrong owner from mistakenly adding products that are not suitable for the car.

2. Frequently Asked Questions.

1. Can different brands of coolant be blended with each other?

In principle, it is not recommended that different brands of coolant products blend with each other, because different manufacturers will use different coolant formulations, and the proportion of additives will be different.

2. Why should I change the coolant regularly?

The coolant contains additives and anti-foam additives, which will gradually lose their due function during use, so that they can not protect the inside of the cooling system, that is to say, under the premise that the cooling system does not leak, the coolant will basically not change the temperature control, but due to the failure of additives, especially anti-foam additives, under the agitation of the water pump impeller, the coolant will produce bubbles, which will greatly weaken the effect of the coolant. Therefore, it is best to replace the coolant on a regular basis.

Hachtief Coolant Long-Life Coolant.

When the coolant is lost due to leakage and other reasons, some car owners in order to save trouble or emergency, directly to the storage tank with water, this is not recommended behavior, because the boiling point and freezing point of the diluted coolant will be greatly reduced, so, if the conditions permit, try to fill the original coolant, of course, the leakage should be repaired as soon as possible.

It is usually recommended to replace it once every two years under normal circumstances, and you can extend or shorten the time appropriately according to the situation.