What are the specific steps to check and replace the coolant?

Hello car owners! The inspection procedure is as follows: check the transparent coolant tank in the cold state of the engine, and check the liquid level height according to the max (maximum) and min (low) marking lines on the coolant reservoir wall.

If the liquid level is too low, add glycol-based coolant, which can protect aluminum products from corrosion.

If the coolant is darker and cloudy, the quality has deteriorated and it is time to replace it.

Release the coolant: first open the cover of the liquid storage (note that the radiator cover should be tightly sealed at this time), and unscrew the cylinder block and radiator drain switch, which should be carried out under the condition of low engine speed.

After the coolant is exhausted, the cylinder block and radiator drain switch should be tightened.

Fill the specified coolant from the radiator filling port until the coolant level in the reservoir reaches the specified "full".

At this time, close the radiator cover, let the engine run to normal operating temperature, stop the engine and turn off the engine to cool to room temperature.

Then observe the liquid level height of the storage tank, add it according to the situation, until the engine is idling, there is no air in the storage tank.

Hope it helps, hope, thank you!

Here's how to replace the coolant in your car.

Method Step 01 When replacing the antifreeze, the first and most important step is to wait for the vehicle to cool down, and do not replace the antifreeze when the engine is at a high temperature. First, there will be a risk of burns, and secondly, the release of antifreeze during the "hot car" will also affect the cooling of the vehicle. >02Generally, the water temperature will drop significantly half an hour after the hot car has just been driven, and the antifreeze can be replaced at this time.

Step 1: Drain water, there are many ways to drain water, the more standardized operation is to jack the car, unscrew the drain screw at the bottom, and let the antifreeze drain from this drain screw hole. There are certain hardware requirements for using this method, that is, a vehicle lift is required, and there is a disadvantage that the speed will be slower if the antifreeze is put with a water drain screw.

03No matter which way you use the water, it is impossible to clean all the antifreeze in the car, and there will still be a lot of antifreeze left in the engine water jacket, condenser, etc. Therefore, it is recommended that when changing antifreeze, try to choose the antifreeze specified by the original factory, and be sure to avoid the mixing of different brands and models of antifreeze. >04Of course, if you do not want to use the original antifreeze, decide to change the brand of antifreeze, and rinse the cooling system after the antifreeze is completely discharged.

The method of flushing is to insert a rubber hose into the reservoir and continuously inject clean water, while the drain port is kept open to let the water flow smoothly from the bottom, and it is necessary to start the vehicle briefly for about 3-5 minutes during the flushing process, and turn on the warm air, and the water must be circulated. >05 This is done so that all the old antifreeze in the car can flow out. How can I tell if the cooling system has finished flushing?

You can tell by the color of the water coming out of the bottom, the color of the water mixed with the old antifreeze should be pale pink or light blue, if the water flowing out becomes colorless clear water, it means that your rinse is done. >06When filling with new antifreeze, you can pour about about about (depending on the model) of antifreeze directly into the reservoir, and stop filling when the liquid level reaches the upper limit max position. At this time, unscrew the drain screw next to the "water pipe", and continue to start filling the antifreeze, see the antifreeze gushing out of the drain screw continuously and without bubbles, and then tighten the drain screw, so far the first time to fill the antifreeze and release the air The work is basically completed.

07 After starting the vehicle, idle for 3-5 minutes to let the vehicle enter the normal working temperature, and make the new antifreeze can be fully circulated in the waterway in the car, and then turn off the engine, open the reservoir will find that the liquid level height has decreased, then only need to add an appropriate amount of antifreeze to keep the liquid level between max and min. In fact, if you don't replace the antifreeze model, you can avoid the flushing step, so that the whole liquid change process can be completed in less than half an hour, which is very convenient and basically has no technical difficulty.

Drive the car into the installation station.

Prepare the appropriate construction tools and equipment.

Open the hood and lay the protective pads.

Check the instrument cluster display and engine rotation.

Use a towel pad on the surface of the expansion tank lid and unscrew the cap.

Locate the reservoir along the overflow pipe that connects to the bottom of the radiator lid. Cooling water inspections are basically carried out on the oil storage tank. Depending on the model, it can easily be misunderstood as a window washer.

The symbol on the lid The lid of the storage tank is usually marked as cooling water, so be sure to check on the first try that there is a liquid level between the upper and lower lines shown on the side of the tank. But please pay attention to whether the cooling water is discolored, if you do not check the cooling water. After the cooling path rusts, the cooling water turns brown.

Antifreeze should be added as needed, adding antifreeze can increase the boiling point of cooling water, not easy to produce scale, and can also reduce impurities When checking the engine coolant water level, it is necessary to wait until the engine cools down to check the water level of the coolant reservoir irrigation.

If the cooling or make-up water is not replaced regularly, the antifreeze and rust protection will be reduced. If you continue to use it, the cooling path will rust. This can lead to problems such as the core of the radiator being clogged with oxide, leaks, and damaged pump seals.

The cloudiness of the cooling water is a mark. As deterioration progresses, it turns brown and rust-like foreign matter begins to accumulate at the bottom of the tank. The important role of cooling water is to circulate to cool various parts of the engine, but the engine is made of metal and will rust as long as the water is used.

It is also used in cold regions, so it freezes in winter and increases in volume, resulting in problems such as horizontal casings and radiators. If the liquid level is between the high and low lines of the tank, it indicates that the liquid level is sufficient. If the water level is low, add coolant.

The cooling system is an important system device that helps to cool the heat of the car engine, but due to the use of antifreeze, after working for a period of time, various dirt will inevitably appear inside. There are many differences in the type of dirt depending on the conditions of use and management, etc., and it has a great impact on the cooling system. Strengthening the inspection and management of the cooling system plays an important role for both itself and the engine.

Attention should be paid to the maintenance system in daily maintenance, and it is especially important to check whether there is a large amount of material bureau under the car after parking, and whether there are no traces of water in the engine room. Pay attention to cleaning the front water tank and condenser, which can be cleaned with high-pressure gas or water gun.

Observe whether the electronic fan is running when the water temperature is high.

When the automatic drain vehicle finds that the cooling water is milky white and pink, it often enters the water tank due to transmission cooling oil leakage, so stop and contact the repair shop in time. When the cooling water is insufficient, it should be replenished to the cooling water overflow, and the light water reactor should be avoided as much as possible. When the coolant is dirty or full of limescale, it is necessary to drain all the coolant and clean the cooling system.

During the use of the vehicle, when the warning light of the vehicle water temperature is too high or the instrument pointer is abnormal, you should stop immediately and check the liquid level height in the water tank. Be careful not to attempt to open the tank. High temperature cooling water will hurt you, so the right way is to cool slowly, the cooling system is an important part of the car, the structural performance is similar, and the cooling system management should be paid attention to in daily use.

Otherwise, it will cause a lot of trouble to the vehicle. When inspecting and repairing, as long as you grasp the two major problems of antifreeze and cooling system cleaning, there will be no major problems.

I don't know how to check and replace the coolant, because generally I go to the 4S shop and ask the staff to change it for me, and I don't change it at will.

The coolant must be checked regularly, if not checked, it will affect the temperature of the vehicle, which will cause the vehicle to break down, and when replacing it, you should also choose some good quality, especially in winter, you must replace it in time.

Of course I do, because I usually do this kind of operation, and I do it very smoothly.

I don't know, because I haven't changed it, and I haven't learned about it professionally.

The car factory will not give you -30 alone. It's all unified. At present, the German system is dominated by Audi, Mercedes-Benz and BMW, and the colors are mainly red, green and blue.

Audi Volkswagen is red, Mercedes BMW is blue. At present, the loading of these domestic car factories is matched by domestic supporting factories, and they use the technology of BASF of Germany, and there is only a difference in color. In other words, a chemical product is not decided based on the brand of the car, but on its function, so we might understand it better.

Therefore, if everyone's car is out of warranty and you don't want to spend unnecessary money or change antifreeze in 4s, then you can choose a more cost-effective color, and the other color can be red. After all, it is better to match the color in use.

Antifreeze is only one of the functions of coolant, and today's automotive engine cooling system is no longer just a simple cooling meaning, but a very complex thermal management system. What is a Thermal Management System? In other words, how the computer can adjust the temperature of the oil and coolant in time.

The engine needs to run at the right temperature, so when the engine is at a low temperature, the operating temperature of the engine needs to be increased; When the engine temperature is too high, the engine temperature must be reduced. If necessary, the computer may quickly cut off some of the load, reducing the power to protect the engine.

There is no direct relationship between coolant color and quality, and the color of coolant is mostly due to the manufacturer's preference, not directly related to quality. Don't worry too much about what color the original coolant is, as long as you change it to a clean one, it doesn't hurt to use green and red now. In the car's operating manual, there are requirements and standards for the replacement of various oil products, so be sure to refer to the recommendations of the OEM, which is a standard that all people and all brands of coolant should follow.

Try to choose water-based coolantsThere are actually different types of coolants on the market, such as oily or water-based, but the vast majority of coolants on the market are water-based (deionized water + ethylene glycol + corrosion inhibitor), mainly because water is cheap and easy to obtain, but because water has always been an ideal cooling material. Humans have been using water to cool objects for thousands of years because it is very effective at cooling water. As I mentioned earlier, the cooling system is a complex thermal management system, so it is very necessary to use a thermally efficient coolant (of course, I am not completely repelled by oil-based coolant, and there are still very few engines that use it at the moment).

How do I replace it? Since the coolant change interval is significantly longer and much less frequent than oil, it needs to be changed as cleanly as possible. At present, many repair shops basically release and add directly.

This method of replacement is barely possible, but in fact, the replacement is not thorough enough, and there is still a lot of coolant that has not been replaced. If possible, try to release it first, then add deionized water (you can use a new coolant if you prefer), then release it to replace it after driving to the big cycle.

Be sure to check 10,000 kilometers once, and choose different coolants in winter and summer, be sure to choose big brands, don't be greedy for cheap, buy some bad ones, which will damage the engine, reduce the service life of the car, and the gains outweigh the losses.

I think at this time, you must go to a professional 4S shop for inspection, and then you must choose a high-quality, and match the coolant of this car, try not to replace it at will, and be sure to replace the coolant in time.

It is necessary to understand the structure of cooling, choose a coolant of good quality, do not confuse antifreeze and coolant, it is best to use the standards of the main engine factory, try to choose water-based coolant, and it is best to let professionals operate.

It is recommended that you need to check and replace it every once in a while, because this coolant is also very important and needs to be replaced in time.

Be sure to check regularly, try to replace it once every three months, and at the same time clean it in time, remove sand and impurities in time, and check the relevant components in time.

Summary. Hello, the inspection method of engine coolant fluid: After the engine cools down, check whether the engine coolant level in the reservoir is in "min"."to the range of "max".

Owners should check their coolant daily and fill the radiator with engine coolant if there is a decrease in engine coolant. <>

<> briefly describes the inspection and replacement methods of coolant.

Hello, the inspection method of the engine coolant fluid limb: after the engine cools down, check whether the engine coolant level in the fluid reservoir is in "min"."to the range of "max". The owner should check the cold sealing fluid every day, and if the engine cold car rental fluid is reduced, fill the radiator with engine coolant.

<> replace the antifreeze with the old liquid, clean the cooling system, and then replace it with a new liquid. The specific operation can be carried out according to the car maintenance manual. The demand for automobile coolant is to prevent the boiling of automobile coolant, so as to meet the needs of heat dissipation and cooling. <>