Coolant is not used in a car for beauty or for fun. It is the most important consumable. As you might guess, any consumable composition must be changed from time to time. However, how often should such an operation be performed for antifreeze? Indeed, in the vastness of the network there are many stories that some never change it at all and supposedly drive perfectly.
Antifreeze, like any other "consumable" in a car, loses its useful properties over time and during the operation of the car. First of all, the tendency of the liquid to foaming increases, which ultimately reduces its working qualities. Reduced anti-corrosion properties of the composition. In antifreeze, inhibitors are gradually consumed, which allow you to maintain the beneficial properties of this composition. Accordingly, the greater the vehicle mileage, the worse the condition of its coolant. Failure to timely replace first of all leads to the development of corrosive processes.
A completely natural question arises: when exactly is it necessary to replace the coolant in the car? In fact, everything is quite simple and most motorists can immediately breathe out - often you will not have to change antifreeze. Although some careless sellers and manufacturers may try to convince the opposite. The fact is that the period for replacing antifreeze is determined by the manufacturer. For each specific brand and variety, it is different. However, as a rule, the service life of the coolant is 5-10 years or a mileage of 250-650 thousand km. The latter varies greatly depending on whether it is a liquid for a car or a truck.
Moreover, many foreign car manufacturers provide a 10-year warranty for the coolant. This figure is a representative period and most often your “swallow” will finally break down before the antifreeze deteriorates. Of course, there are exceptions. Some budget models use fairly cheap fluids that can last no more than 3 years or 125 thousand kilometers. In addition, many manufacturers indicate that antifreeze should be changed when the amount of active inhibitors in it drops to 85%.
The bottom line is that for most cars, especially those bought on the primary market, replacement needs to be done very rarely. It is much more important to monitor the level of the coolant, as its fall as a result of a leak or malfunction can cause serious damage to the engine of the machine.
If you want to know even more interesting things, then you should read about efficient way, which will allow you to "rejuvenate" long-used candles.