1, shell; 2. Mobil; 3; Compton; 4. Kunlun; 5. The Great Wall.
Precautions for replacement:
Note 1: Try to use the same brand of antifreeze. Different brands of antifreeze will have different production formulas. If they are used together, chemical reactions between various additives are likely to occur, leading to the failure of additives.
Note 2: the validity period of antifreeze is mostly two years (individual products will be longer), and the products should be confirmed to be within the validity period when adding;
Note 3: It must be replaced regularly, usually every two years or every 40,000 kilometers. Taxis should be changed more frequently. When replacing, discharge the old liquid, clean the cooling system, and then replace the new liquid;
Note 4: Avoid mixing with water. Traditional inorganic antifreeze can't be mixed with water, which will produce precipitation and seriously affect the normal function of antifreeze. Organic antifreeze can be mixed with water, but not too much water.
Question 2: What brand of antifreeze is the best? Famous brands of antifreeze: 1, Shell; 2. Mobil; 3; Compton; 4. Kunlun; 5. The Great Wall. Precautions for replacement: Note 1: Try to use the same brand of antifreeze. Different brands of antifreeze will have different production formulas. If they are used together, chemical reactions between various additives are likely to occur, leading to the failure of additives. Note 2: the validity period of antifreeze is mostly two years (individual products will be longer), and the products should be confirmed to be within the validity period when adding; Note 3: It must be replaced regularly, usually every two years or every 40,000 kilometers. Taxis should be changed more frequently. When replacing, discharge the old liquid, clean the cooling system, and then replace the new liquid; Note 4: Avoid mixing with water. Traditional inorganic antifreeze can't be mixed with water, which will produce precipitation and seriously affect the normal function of antifreeze. Organic antifreeze can be mixed with water, but not too much water.
Question 3: Which brand of antifreeze is the best?
1. When parking in cold winter, prevent the radiator from bursting and the engine cylinder block or cover from freezing.
Its main index is the freezing point of antifreeze. When selecting or preparing antifreeze, its freezing point should be about 10℃ lower than the lowest temperature in this area to ensure that antifreeze will not freeze under special circumstances. Another important function of antifreeze is its boiling point. Boiling point means that under the condition of external atmospheric pressure balance, the control temperature of automobile engine cooling system starts to rise to boiling and no longer rises. Keep the engine working at normal temperature. Anti-freezing liquid also has anti-corrosion function. Corrosion is the remote destruction of metals in the natural environment due to chemical reactions, electrochemical processes and physical use. At present, there are six main anti-corrosion metals, namely: steel, cast iron, copper, solder, brass and cast aluminum. The cooling system of modern automobile engines mostly adopts cast aluminum and aluminum alloy parts, so the focus of anti-corrosion of antifreeze should also be shifted to anti-aluminum corrosion. At the same time, we should also consider the dissolution, expansion and aging of non-metallic materials such as rubber and plastic in the cooling system. Corrosion inhibitors are substances that can prevent or slow down the above process. Waterproof scale is another important function of antifreeze. Scale is produced by insoluble salts or oxide crystals adhering to the surface of radiator. Scaling not only affects the normal heat dissipation of radiator, but also easily causes the blockage of circulating pipeline of cooling system. The high water temperature seriously affects the normal operation of the engine. The main substances that produce scale in the cooling system are calcium sulfate, calcium carbonate and magnesium carbonate. And brown calcium phosphate caused by improper use. Calcium and magnesium ions mainly come from the water in the cooling liquid, so the water quality of the prepared cooling antifreeze must be strictly controlled.
Second, the requirement of adding coolant.
According to the structural characteristics of the engine, the manufacturer has made strict requirements for hijacking and the use of coolant, and has clear requirements for the general use of long-term antifreeze and antirust liquid. When antifreeze leaks due to long-term use or other reasons, distilled water must be added, and river water or tap water must never be added. Due to the lack of experience in the performance of antifreeze and the lack of strict requirements for the quality of added cooling water, it will cause water scaling, affect the normal circulation of engine cooling water, reduce the cooling intensity, and thus make the engine temperature too high.
More importantly, try to use long-acting antifreeze and pay attention to choose good quality antifreeze.
Question 4: Which brand of antifreeze is good? The ranking of the top ten antifreeze brands recommends that the engine coolant must be mixed with distilled water and antifreeze. You can't just add pure antifreeze. Pure antifreeze will cause high water temperature.
Antifreeze has the functions of antifreeze and rust prevention.
Antifreeze: generally ethylene glycol or propylene glycol used in our industry.
Its function is to raise the "boiling point" of our engine coolant (the boiling temperature of cooling water) and lower the "freezing point" of cooling water. Its service life is generally 1-2 years, and there is a special test paper for testing the concentration of coolant. The concentration of antifreeze is generally 35%-68%, and the recommended value for general vehicles is 50%, that is, 50% antifreeze. The service life is generally 1-2 years.
1. First of all, the color of antifreeze does not represent the quality of antifreeze. The color is just different pigments added by different antifreeze manufacturers in different proportions.
2. After using antifreeze for a period of time, whether to replace it is not determined by the bright color, but by the concentration of antifreeze (the concentration needs to be detected by special test paper, which is available in the maintenance station).
3. When replacing different brands of antifreeze, it is necessary to clean the antifreeze used before to reduce chemical corrosion. It is necessary to clean the water tank. It is recommended that you clean the water tank.
Question 5: Which brand of automobile antifreeze is good? It is recommended to use Shell antifreeze, about 4 liters of 65 yuan.
Question 6: What brand of antifreeze is good? Mobil Shell ellman Great Wall is good, but as long as it is genuine.
Question 7: What brand of antifreeze is good? Recently, there is a kind of Aibo Chebao antifreeze that sells well. It seems that Dongguan Lei Ying Lubrication Technology Co., Ltd. is the domestic general manager. Well, I learned it from my friend who runs a 4S shop. I heard that the anti-freezing effect is good and the customers are well screened. Also need to pay attention to the following.
Precautions for replacement:
First, you can't open the water tank cover or drain valve just after the car is driving, because the temperature of antifreeze or water is very high at this time to avoid scalding. Second, replace the antifreeze: the effective use period of antifreeze is generally two years. When the coolant expires or becomes dirty, it must be replaced. When replacing, all the old antifreeze must be removed and the water tank must be thoroughly cleaned.
Third, try to use the same brand of antifreeze. Different brands of antifreeze will have different production formulas. If they are used together, chemical reactions between various additives are likely to occur, leading to the failure of additives.
Fourth, it must be replaced regularly, usually every two years or every 40,000 kilometers. Taxis should be changed more frequently. When replacing, discharge the old liquid, clean the cooling system, and then replace the new liquid;
5. Avoid mixing with water. Traditional inorganic antifreeze can't be mixed with water, which will produce precipitation and seriously affect the normal function of antifreeze. Organic antifreeze can be mixed with water, but not too much water.
Question 8: Which brand of antifreeze is good? You can choose your original car. It is generally recommended to choose the original one.
Question 9: What brand of antifreeze is better for long-term use? For water-cooled engines, water is the best coolant, but it is needed at 0℃.
Ice cubes. Increase the volume by 9%. Easy to make the water tank and cylinder burst; The boiling point of summer water is low and high.
When the weather is warm, the engine will boil under bad driving conditions, which will affect the car.
Normal driving; The water tank is easy to scale and reduce the heat transfer efficiency; Water can also rust metals and the like.
In order to overcome the above shortcomings, water-cooled engines use antifreeze as cooling liquid. special
It is of great significance to fire engines, ambulances and military vehicles. Anti-freezing performance of engine
Requirements:
① Low freezing point. It should reach the lowest freezing point.
When the temperature reaches about 50℃, the water tank cannot be cooled.
The system pipeline shall not be frozen and cracked, and the steam shall be ensured at the same time.
The car starts at any time at low temperature;
② High boiling point and low volatility. boiling point
Should be above 100;
③ Less scale and good thermal conductivity.
Play a role in cooling the engine and components;
(4) High flash point, not easy to catch fire and burn;
⑤ Does not corrode metal or rubber;
⑥ No foam is generated.
Question 10: I'm going to change antifreeze. What brand is the best? Generally, a better U2 will do.