Every car owner sooner or later faces the need to add technical fluids, but inexperienced drivers are often confused about the fact that the car is not a good driver. where exactly do you need to pour water. An error in the choice of capacity can lead to serious engine or cooling system failures, so it is important to clearly understand the differences between tanks. In this article, we will analyze in detail where the access points to different systems are located, and help to avoid fatal errors in the maintenance of the machine.
Modern cars are equipped with several independent circuits that require control of the level of liquid. Glass washerThe engine cooling system and, in rare cases, the battery pack are the three main areas that may require access. Confusion arises from the similar appearance of the throats or their close location in the hood space, so visual identification of the covers is the first and most important skill.
Before opening the hood, you need to make sure that the engine is cooled and the car is on a flat surface. Hot antifreeze It is under pressure and can cause burns, so never rush to open the lids immediately after the trip. Let’s take each system apart so you have a complete picture of what’s in your car and where.
The system of the washer: where to pour "freezing"
The easiest and safest element for beginners is a glass washer tank. It is here that water is poured to clean the windshield from dust and dirt. It is easiest to find: the lid of this tank almost always has a characteristic blue color and marking in the form of a fountain or windshield with splashes. Blue cap. This is a standard for most manufacturers, from Lada before BMW.
The volume of this tank varies from 3 to 5 liters depending on the model of the car. Unlike other systems, you can use ordinary tap water if the air temperature is above zero. In winter, it is important to use special freeze-freeSince frozen water will tear the plastic tank and damage the pump.
The doling process is extremely simple: unscrew the lid, insert the funnel and pour the liquid until the characteristic sound of overflowing or visual filling of the neck appears. Filter-gridIf it is present in the neck, it will prevent large debris from entering the system, but it is better to use a clean liquid container.
⚠️ Warning: Never pour antifreeze, brake fluid or oil into the washing glass tank. This will lead to stains on the glass that cannot be washed away and can damage the rubber elements of nozzles and hoses.
Cooling system: radiator and expansion tank
The second and most important area is the engine cooling system. It's circulating here. antifreeze (cooling fluid) that removes heat from the motor. There are two main places to access this system: the radiator itself (closed by a metal cover) and the plastic expansion tank (closed by a plastic cover). In modern cars, water is poured into an expansion tank, which usually has semi-transparent walls with tags. MIN and MAX.
The expansion tank serves to compensate for the volume of liquid when heated. When the engine is running, the antifreeze expands, and its surplus goes to the tank; when cooling, it returns back. The cover of this tank often has warning labels and a pressure relief valve. Pour water This is only possible in emergency cases or if you use a concentrate that requires dilution with distilled water.
Use only distilled water to add to the cooling system. Conventional water contains calcium and magnesium salts, which form scale on the walls of the radiator and pump, reducing the cooling efficiency.
If the level in the tank fell below the mark MIN On a cold engine, you need to add fluid. Unscrew the lid (only on a cold engine!) and add the desired volume.
☑️ Testing the level of OGL
Battery battery: maintenance of the battery
The third point where water may be needed is the battery pack. However, this is only relevant for battery-operatedThese are less common today, mainly on older cars or specific equipment. Modern batteries (Maintenance Free) are leakproof and do not require user intervention during the lifetime of the user.
If you have a serviceable battery, there are six plugs on its top cover (one for each jar). Inside, an electrolyte is splashed - a solution of sulfuric acid and distilled water. Over time, the water boils out and the electrolyte level drops, exposing the lead plates, which leads to their destruction. These batteries are only used for this purpose. distilledNever adding a finished electrolyte or acid unless the density has been checked by the areometer.
⚠️ Attention: Electrolyte is an aggressive acid. When working with the battery, be sure to use safety glasses and gloves. Acid on skin or clothing causes severe chemical burns.
To check the level in the banks of the battery often use a glass tube or visual inspection through a translucent case (if any). The liquid level should be 10-15 mm above the upper edge of the lead plates. Pouring is made with a syringe or a special pear until the desired level is reached.
Table: where to pour what liquid
To systematize the information and eliminate confusion, we give a summary table of the main liquids and their refueling points. Save this data so that at a critical moment you do not guess which hose or tank is in front of you.
| Component | Type of liquid | Colour of the cover/marking | Replacement/dole rate |
|---|---|---|---|
| Glass washer | Water/"Non-freezing" | Blue/Fountain | As you spend it, |
| Expanding tank | Antifreeze/Tosol | Different (often yellow/black) / Thermometer | Every 2-5 years (increased in level) |
| Battery (if serviceable) | Distilled water | Absent (congestion on the body) | Every 3-6 months (check) |
| Radiator (main) | Antifreeze | Metallic/Warning | Only with a full replacement. |
As you can see from the table, blue-cover - it's almost always a glass washer. Cooling system covers often have warnings about the danger of opening on hot. Metal radiator covers are found on old cars, and on new ones their function is performed by plastic covers on the tanks or the radiator itself.
What happens if you mix the tanks up?
If you pour antifreeze into a washing tank, you will get sticky, sweet glass that attracts insects and is poorly flushed. If you pour water into the radiator instead of antifreeze in winter, the engine will overheat, and in frost, the cylinder block can crack from ice.
Myths and misconceptions about the “water” in the car
There are many myths around car fluids that can harm your vehicle. One of the most common is “in the radiator you can pour ordinary water from the tap, if there is no antifreeze.” It's blunder. Tap water contains chlorine, hardness salts and other impurities that quickly form scale on the walls of thin radiator tubes, reducing heat transfer and leading to corrosion of aluminum parts.
Another myth is that the color of antifreeze determines its chemical composition (red is one type, green is another). In fact, color is just a matter of colorantadded by the manufacturer for ease of leak detection. Different manufacturers can use the same colors for different chemical bases. Therefore, you need to focus not on color, but on the tolerances indicated in the instructions for the car (for example, the car should be used in the car). G12, G12+, G13).
It is also believed that in the summer in the cooling system can be poured clean distilled water. Although it boils at 100°C and antifreeze at 105–110°C, the main problem is not boiling temperature, but lubricating properties and corrosion protection. Water does not lubricate the pump and causes rusting of the engine channels, so the use of special cooler It's all year round.
Instructions: how to properly add liquid
The process of fluid supplementation requires compliance with a certain algorithm of actions in order not to harm the car and protect yourself. First, open the hood and find the right tank, focusing on the color of the lid and marking. Make sure the engine is cooled – this is critical for the cooling system.
Wipe the area around the lid with a wet wipe or rag so that dirt doesn't get inside the tank when you open it. The car’s car joints don’t like abrasive particles. Unscrew the lid slowly. If you hear the hissing sound of gases coming out (in the cooling system), then there is still pressure - stop acting and wait.
Main maintenance rule: all manipulations with the cooling system are carried out only on the cold engine. Hot antifreeze is under high pressure and can spill out the fountain, causing burns.
Using a clean funnel, pour the liquid to the desired level. For the washer - to the point or to the neck, for the expansion tank - between the marks MIN and MAX. Tightly twist the cover to a characteristic click or stop to ensure the tightness of the system.
Frequent problems and their solution
If you notice that the fluid level is falling too quickly, it is a signal of malfunction. In the system of the washer, the most often to blame is a burst hose or a faulty engine pump. Check the ground under the car after parking: if there are puddles of liquid with a characteristic smell of alcohol or chemistry, look for a leak under the tank.
In the cooling system, the disappearance of antifreeze is a more alarming symptom. This may indicate a breakdown of the cylinder head (CBC) gasket, a crack in the radiator or leaky pipes. If the antifreeze goes away and under the car is dry, it may burn up in the engine (white smoke comes out of the exhaust pipe) or get into the oil (the oil becomes like an emulsion).
⚠️ Note: If you find a constant decrease in antifreeze levels, don’t ignore it. Operation of the car with an overheated cooling system is guaranteed to lead to overheating and overhaul of the engine.
Regular visual monitoring of fluid levels is a simple habit that saves you from expensive repairs. It is enough to open the hood once a week to be sure of the serviceability of the car systems. Remember that prevention is always cheaper than elimination.
Can antifreeze be mixed in different colors?
Mix antifreezes of different colors can only be if they have the same chemical basis and manufacturer tolerances. Color is just a dye. However, without knowing the exact composition, it is better not to take risks. Mixing silicate and carboxylate antifreezes can lead to precipitation, which will clog the oven radiator and the main radiator.
How often should I change the liquid in the washing machine?
The liquid in the washer has no expiration date and changes only as it is spent. However, if you use water in the summer, it is advisable to fully develop or pump it for the winter to pour a quality “freeze”. Residues of water can freeze in hoses at the first frost.
Why not open the radiator cover on a hot engine?
The cooling system operates under excessive pressure, which increases the boiling point of the liquid to 110-120 ° C. When removing the cover on the hot engine, the pressure drops sharply, and the liquid instantly boils, turning into steam. This causes a powerful release of boiling water outside, which is fraught with severe burns of the face and hands.
What to do if the antifreeze is out, and there is nothing to add?
In an emergency, if the service is far from the service and the level has fallen critically, you can add a little clean (better distilled) water to get to the destination. But immediately after that, you need to drain this mixture and replace the entire volume of coolant with the correct antifreeze, as the water will disturb the balance of additives and reduce the freezing point.
Where does the battery water go?
When charging the battery, electrolysis of water that is part of the electrolyte occurs. Water breaks down into hydrogen and oxygen, which escape through the ventilation holes. That is why the serviced batteries periodically need to add distilled water, restoring the level of the electrolyte, but not its density.