How to Add Coolant to Car and How it Works?

Posted on

Cara Mengisi Air Radiator Mobil

How to add coolant to car? Filling up your car’s radiator is one of the basic yet crucial maintenance actions to keep your vehicle’s engine healthy. An efficient cooling system is key to keeping the engine temperature stable while operating, preventing overheating, and extending the life of your car’s engine.

In this article TransTRACK, we will explore the practical steps on how to properly fill your car’s radiator coolant. From preparation to choosing the right coolant, as well as the importance of regular maintenance, we’ll cover everything you need to know to keep your car’s cooling system functioning optimally.

Keep reading as we guide you through easy-to-understand steps, as well as offer practical advice to keep your car cool and running well.

How to Add Coolant to Car

How to add coolant to car is an important process to keep the car engine cool and operating optimally. Here are the general steps for filling the car radiator coolant:

Importance of Cooling

The cooling system in cars is very important because car engines generate heat when operating. If the heat is not removed properly, the engine temperature can rise excessively and cause serious damage to the engine.

Preparation Stage

Be sure to check the condition of the radiator and cooling hoses regularly to ensure there are no leaks or damage. This is important as leaks can reduce the efficiency of the cooling system and lead to bigger problems.

Coolant Choice

When filling the radiator coolant, you should choose between clean coolant and a mixture of coolant with coolant. A mixture of coolant with coolant is usually recommended as it has a lower freezing point than plain coolant and has anti-corrosion properties that help protect the metal parts inside the cooling system.

Fluid Type Selection

It is important to use the type of coolant recommended by your car manufacturer. The right coolant can ensure the cooling system operates at optimal temperatures and protects engine parts from corrosion and damage.

How to Fill coolant

When filling the radiator coolant, be sure to do so slowly and carefully so that no air bubbles are trapped in the system. Air bubbles can impede coolant flow and reduce cooling efficiency.

Proper coolant Level

Check the coolant level inside the radiator and expansion tank. Never fill coolant beyond the marked maximum level as this may result in excessive pressure within the cooling system.

Check for Leaks

After filling the coolant, check for any signs of leaks around the radiator, hoses, or coolant pump. Small leaks can develop into major problems if not addressed immediately.

Periodic Maintenance

Periodically checking and topping up your radiator coolant is an important part of your car’s routine maintenance. It can help prevent serious cooling problems and extend the life of your car’s engine.

By understanding the process of filling your car’s radiator coolant and performing proper maintenance, you can ensure your car’s cooling system is functioning properly and that the engine continues to operate at a safe and efficient temperature.

How Radiator coolant Works in Cars

The cooling system in a car, which involves radiator coolant, functions to remove the heat generated by the engine while operating. The process works as follows:

Heat Dissipation

When a car engine is operating, the temperature inside the combustion chamber increases significantly. Most of the energy generated from fuel combustion is converted into heat. If this heat is not removed, the engine temperature will continue to rise and may cause serious damage.

Heat Transfer

A cooling system uses a liquid (usually coolant or a mixture of coolant and coolant) to absorb heat from the engine. This fluid flows through the engine block and cylinder head, where most of the heat is generated.


The coolant radiator is the most important part of the cooling system. The radiator consists of a series of metal pipes that are attached to cooling fins. As hot fluid flows through the radiator pipes, the heat is absorbed by the metal of the radiator and then transferred to the air through the cooling fins. The air flowing through these fins can come from the wind coming in through the front grille of the car or from a cooling fan.

Cooling Cycle

The fluid that has lost its heat in the radiator then returns to the engine through the coolant hoses. During the journey back to the engine, the fluid may pass through a thermostat. A thermostat is a valve that opens and closes based on the temperature of the coolant. When the fluid temperature is low, the thermostat will close to allow the engine to reach its optimal operating temperature faster. When the temperature rises, the thermostat opens and allows the fluid to flow into the radiator to be re-cooled.

Expansion Tank

Cooling systems are often equipped with an expansion tank that contains additional coolant. When the engine is hot, the coolant can expand and enter the expansion tank to avoid overpressurization in the system. When the engine is cold, the liquid can return into the system through the siphon or evaporation valve.


It is important to maintain the cooling system by changing the coolant regularly according to your car manufacturer’s guidelines. Regular maintenance also includes checking for leaks, replacing the thermostat if needed, and cleaning the radiator to ensure smooth airflow.

In this way, the car’s cooling system works to keep the engine temperature stable and prevent damage from overheating.

By understanding the importance of maintaining the car’s cooling system, radiator coolant filling is a vital step in maintaining your vehicle. To simplify and improve the efficiency of this process, TransTRACK offers the best solution through its  Vehicle Maintenance System.

Using TransTRACK, you can easily keep track of regular maintenance schedules for the cooling system and get reminders when it’s time to fill the radiator coolant. The system also helps you manage your vehicle’s maintenance history and identify potential problems before they develop into more serious breakdowns.

Don’t let cooling system problems interfere with your car’s performance. With TransTRACK, you can keep your car in the best condition possible, maintaining the reliability and efficiency of your engine on your daily commute.


vehicle engine