Relevant data show that more than 50% of the world's automobile engine failures mainly come from the cooling system, and as the "strength bearing" in the automobile cooling system, antifreeze plays a vital role in the automobile cooling.

What is antifreeze?
The full name of antifreeze is "antifreeze coolant", which means a liquid with antifreeze function. We often say that antifreeze and coolant are the same thing.
The antifreeze consists of three parts: water, antifreeze and additive. According to the different components of antifreeze, it can be divided into three types of coolant: ethanol type, glycerin type and glycol type. Most of the domestic sales are water-based antifreeze of ethylene glycol, which has high boiling point, low volatility, moderate viscosity, small temperature change and good thermal stability, and is an ideal coolant.
The antifreeze can take away excess heat for engine cooling, and prevent the cooling water in the pipeline from freezing and cracking the radiator in winter, as well as freezing the engine cylinder block. In addition, it has excellent performance such as waterproof, anti-scaling and anti-corrosion. It is an indispensable liquid for engines.
Many car owners think that antifreeze is only used in winter, but in fact, antifreeze should be used all year round, including summer.
How often is the antifreeze replaced?
Most vehicles are replaced every two years. Of course, this is only a reference replacement cycle. According to your maintenance manual or actual use, we can regularly check the use of coolant at ordinary times. If the coolant is found to be lower than the minimum scale value, we should add it in time, otherwise it will affect the cooling efficiency of the engine.

Can antifreeze be mixed?
There are many colors of antifreeze on the market, including blue, green, pink, etc. The reason why there are so many colors is mainly to distinguish different components. Different colorants are added to the antifreeze to prevent mixing. Generally, the main component of green antifreeze is ethylene glycol. In addition, the color of antifreeze also helps to identify the leakage. Of course, color is only a choice of manufacturers, mainly depends on the ingredients marked on the package.
So, can different colors of coolant be mixed? The answer is no. The mixing of different brands of coolant and different colors of coolant can easily cause chemical reactions such as precipitation and bubbles, thus reducing the performance of the coolant. Different brands use different additives. If mixed, it will destroy the proportion balance of additives, cause corrosion of the cooling system, such as the damage of rubber sealing ring, and even cause water leakage at the water seal of the pump and the welding point. In the case of uncertainty, do not try easily.

Can antifreeze be replaced with water?
Many novice drivers may have heard the old driver say that the antifreeze can be replaced by water if it is short of water?
Qualified antifreeze must have the characteristics of anti-boiling in summer and anti-freezing in winter. The normal working temperature of the automobile engine is about 90 ℃, while the freezing point of the water is 0 ℃ and the boiling point is 100 ℃. If all water is injected, the water will "boil" when the water temperature reaches 100 ℃. In winter, the vehicle will be parked for a long time when the engine is stopped, especially when the ambient temperature is below zero, the water in the cooling system will freeze and damage the cooling system.
In addition, antifreeze also has the characteristics of rust prevention and corrosion prevention. The cooling system of the engine is made of metal materials and non-metallic materials. If it contacts with water for a long time at high temperature, corrosion, rust and scale will occur, which will affect the effect of the cooling system and cause engine damage.
Therefore, it is recommended to use antifreeze in winter and summer. If water is added, distilled water can only be added in case of emergency, and the minimum temperature in the region should not be lower than 0 ℃.

Gallon special antifreeze has excellent cooling performance, excellent anti-corrosion performance and thermal conductivity, low freezing point, high boiling point, and is universal in all seasons. It is applicable to the cooling system of all types of vehicles under various climatic conditions. It is anti-boiling in summer and anti-freezing in winter. It has withstood the test in severe cold areas such as Northeast China and Northern Shaanxi (about - 30 degrees in winter), and has been widely recognized by customers.