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I believe that many people will be a little stunned when they hear this question, especially some novice drivers, this problem may never be considered, and even feel that the antifreeze does not need to be replaced.
In practice, this idea is not right, different models and different maneuverability will affect the service life of antifreeze, so how often should it be replaced? There are mainly two common situations.
Before that, let's take a look at the role of antifreeze, from the name you can initially understand that this antifreeze is used to protect the vehicle's engine cooling system, it can make the engine avoid freezing in winter, so that it can work normally.
In addition, other chemicals are added to the antifreeze, such as a special amount of preservatives, which can prevent rust and dirt build-up in the vehicle's engine system, and better maintain the powertrain.
Although antifreeze does not wear out like engine oil, it will deteriorate or fail with the passage of time and the continuous use of the vehicle, and it needs to be replaced in time.
Generally speaking, a normal family car can be replaced once every 5 years or so, but this time standard is not fixed for all vehicles.
After all, different brands of vehicles will be equipped with different powertrains, and the difference in their performance will affect the loss of antifreeze.
If it is found that the vehicle's antifreeze has undergone a significant change in color, such as blackening or a large amount of particle precipitation, it means that the antifreeze has deteriorated and can no longer play its role.
If it is not replaced, the power system of the future vehicle is prone to ice or corrosion, which will affect the normal operation of the vehicle in serious cases.
Usually, the deterioration of antifreeze is due to the fact that it has not been replaced for too long, for example, some people do not have common sense in this regard, so they have not been replaced.
There are also vehicles that are used too frequently, such as taxis, trucks, long-distance buses, etc., these vehicles are on the road all year round, and the loss is naturally greater, and the antifreeze may be changed every 5 years to be replaced every 3 years.
The second situation is that the antifreeze in the car is significantly reduced, or it has exceeded the shelf life, and some car owners may not drive frequently on weekdays, so they will feel that the antifreeze does not need to be replaced every few years.
However, as everyone knows, many vehicles have a shelf life, some antifreeze may have a shelf life of three to five years, and some may be as high as ten years, such a difference in shelf life is mainly related to the chemicals contained in it.
In this case, the owner should pay attention to whether the antifreeze is within the shelf life, if it has exceeded the shelf life, then it is necessary to replace it.
In addition, individual vehicles may consume more antifreeze, for example, the power system is more likely to heat up than ordinary vehicles, which will lead to faster antifreeze evaporation.
In addition, there is also the influence of ambient temperature, and in a perennial dry and hot environment, the evaporation rate of antifreeze will naturally be faster.
On the contrary, in a cold climate, the owner needs to pay attention to the antifreeze itself to have a good antifreeze effect, especially the owner located in the northern cold zone.
In winter, the temperature will reach tens of degrees below zero, and if the antifreeze itself is not freeze-proof, it will form ice cubes in such extreme weather, so it will not be able to play its role.
In general, there is no definite answer to how often the antifreeze needs to be replaced, which needs to be judged by the owner based on the model of his car and the use of it.
At the same time, it is also necessary to maintain and inspect the vehicle regularly, so that the professional car repairer can judge, so as to get an accurate replacement time.
Is there any antifreeze that doesn't need to be replaced? Or is there an antifreeze that lasts longer? The answer is yes.
In the vehicles manufactured by individual brands, long-term maintenance-free or life-long maintenance-free antifreeze will be added, and the biggest difference between this maintenance-free antifreeze and ordinary antifreeze is the addition of propylene glycol.
Propylene glycol is also specially developed to solve the problems of engine heating and corrosion, and the biggest feature is high boiling point and low freezing point.
Ordinary antifreeze may freeze at minus 10 degrees Celsius, and if the heat exceeds 100 °C, it will definitely boil, while the freezing point of propylene glycol is about minus 60 degrees Celsius, and the boiling point is 187 degrees Celsius.
This characteristic means that it has a better cold-absorbing effect, can be used in most areas of the mainland, and the antifreeze consumption maintained with the blessing of this characteristic is extremely low.
Even if the vehicle is used to the end of life, it will not be consumed, but the price of such antifreeze is relatively high, but it is not expensive, and it is a difference of several hundred dollars.
This mainly depends on the choice of the owner, if you feel that your car does not drive much, or it contains long-term maintenance-free antifreeze, then there is no need to replace, everyone still has to choose according to their own situation.
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