Tips Sahabat

Several Causes of Cloudy Radiator Water

09 April 2025
air radiator keruh

One of the common problems that often occurs in car radiators is the presence of cloudy radiator water. This is usually caused by several factors that can sometimes be unexpected. Therefore, proper maintenance is necessary to prevent the radiator water from becoming cloudy.

The radiator is one of the components of the cooling system in a vehicle that functions to cool the performance of the car engine. So, what actually causes the radiator water to become cloudy? Here’s the explanation!

Causes of Cloudy Radiator Water

If you notice that the radiator water in your car is brownish, it indicates that the radiator water in your car is dirty. There are several factors that trigger the change in the radiator water in your vehicle.

Here are other common causes of cloudy radiator water:

· Different Engine Material

The first cause of cloudy radiator water is the difference in materials used in engine manufacturing. The engine block material in cars consists of two materials, namely cast iron and aluminum.

If your vehicle is old or a diesel vehicle, the material often used is cast iron. This can be a cause of the change in radiator water in your vehicle.

Radiator water changes color because the water rapidly alternates between hot and cold, but this is considered a normal condition and does not need to be worried about.

On the other hand, if your vehicle's engine uses aluminum as the base material, it will not cause discoloration, making it similar to regular water and difficult to distinguish.

· Rusty Components

The next cause that can make the radiator water cloudy is the cooling system components starting to rust. This is because the water in the radiator circulates into the engine through the water jacket.

If the radiator, engine block, or other components start to rust, this can cause the water in the radiator to become cloudy or brownish.

· Mineral Deposits from Water

The cooling system should indeed receive proper maintenance by routinely cleaning and replacing the water. If the radiator water has become cloudy, it could be due to mineral deposits from the water.

This occurs because the radiator is filled with regular water, whether tap water or well water. Continuously boiling water can leave scale and cause the radiator water to turn brownish.

Mineral deposits in the water can also trigger other components to rust. As a result, the water mixed with rust and deposits circulates in the engine through the water jacket.

· Frequent Use

With prolonged use beyond the ideal usage limit, the radiator water can also become cloudy, thus reducing its quality.

You can check the color of the radiator water by looking at the reservoir tank that contains the coolant fluid. If the color has changed to cloudy, it is usually contaminated with water, and the additives in it have deteriorated.

If this happens, you need to completely drain the cloudy radiator water and replace it with new coolant. Because if this is left unchecked, the vehicle will overheat more quickly and can even lead to overheating.

Check the Condition of Your Radiator Water at the Nearest Daihatsu Workshop!

If you experience conditions like the above, the solution you can take is to drain the cloudy radiator water and replace it with the coolant recommended by the manufacturer.

However, if this does not resolve the cloudy radiator water in your vehicle, you should visit the nearest Daihatsu workshop as soon as possible for proper handling.

Also Read: Easy Ways to Know if the Radiator is Rusty

Through us at the Daihatsu workshop, you can get vehicle service easily and quickly. By using the service booking facility we provide, you can meet your vehicle service needs without having to wait in long lines.

So, what are you waiting for? Check the condition of your vehicle's radiator water now to optimize your car's performance! Get more information through our website only at Daihatsu's official page! Let's take care of your car by performing regular maintenance!

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