Antifreeze is not strictly a waste product, so it is not necessary to replace it in a short time. There are two main reasons for the deterioration of antifreeze: one is the loss of internal volatile substances after a long time of use, resulting in the reduction of freezing point and boiling point; Second, the organic liquid in the antifreeze solution dissolves a large amount of organic matter in water channels and pipelines after a long time, causing turbidity and even deterioration.
To judge whether the antifreeze has deteriorated is not simply to observe whether it has changed color with the naked eye, or to calculate by time. The correct method is to need professional instruments for measurement. Generally, regular 4S stores or repair garages will have this kind of equipment. When the detected value is lower than the standard, it is necessary to replace the antifreeze. At present, the replacement of antifreeze mainly includes gravity replacement method and circulator replacement method. In short, gravity replacement method is to unscrew the screws at the bottom of the water tank, drain the old coolant, and then screw in the screws to add new coolant; The liquid replacement method of the circulating machine is to unscrew the water tank cover, directly pump away the old antifreeze, and then add new antifreeze. Strictly speaking, there is no great difference between the two methods, but now the 4S store packages the liquid change method of the circulator as a "black technology" on a tall scale. The purpose is naturally to charge a higher replacement fee, so car owners remember to distinguish!
It should also be pointed out that many old drivers think that antifreeze does not need to be replaced, but can be added in time when it is lacking. This idea is completely wrong. As long as the cooling system of the current vehicle is not faulty, there will be no problem of antifreeze reduction. Conversely, the reduction of antifreeze must mean that the cooling system leaks. It is necessary to check whether the water pipes and joints are aging and cracking in time.
The above is a detailed introduction about antifreeze manufacturers, which I hope will be helpful to you If you have any questions, please contact us We will provide you with professional service https://www.smxnykj.com/