Tips Sahabat

Easy Ways to Know if the Radiator is Rusty

09 April 2025
Radiator  Berkarat

The radiator is one of the important components that serves as a cooling system in a vehicle. As one of the essential components in a vehicle, you need to regularly check and maintain it to prevent the radiator from rusting.

If it has already rusted, your vehicle's radiator will start to corrode and be more prone to breaking. Before it gets worse, it is advisable to know how to identify a rusted radiator along with the causes.

How to Identify a Rusted Radiator

The radiator is the vehicle's cooling system that functions to stabilize the engine temperature during the combustion process to prevent overheating.

The longer the vehicle's engine runs, the higher the heat generated from the combustion process. To reduce the heat in the engine, a cooling system called a radiator is needed.

This radiator will transfer the heat generated from the vehicle's engine to the air. The way it works is that the radiator circulates water or coolant through the radiator channels installed around the vehicle's engine.

As the coolant flows, it will absorb the heat from the engine to stabilize its temperature. After absorbing the heat, the coolant will flow back to the radiator.

Later, the radiator will cool the coolant temperature again and release the heat to the air.

After you understand a bit about how the vehicle's radiator works, it is hoped that you will be able to better understand the discussion about how to find a rusted radiator along with its causes.

Causes and How to Identify a Rusted Radiator in Vehicles

Often, vehicle owners encounter several problems with vehicle components, such as the appearance of rust on the radiator. How can you identify a rusted radiator in a vehicle? Here’s the explanation for you:

1. Check the Condition of the Radiator Cap

The easiest way is to check the condition of the inside of the radiator cap and the mouth of the opening. If you find brown deposits in the gap of the mouth and the rubber of the radiator cap, it indicates that your vehicle's radiator has rusted.

This rusting occurs due to the oxidation process and evaporation of the coolant that gets eroded and carried up to the radiator channels during the circulation (engine cooling) process.

2. Check the Contents of the Reservoir Tank

In addition to checking the radiator cap, another way to determine if the vehicle's radiator is rusted is by checking the contents of the reservoir tank or the tank that holds the radiator water reserve.

If you find that the water in the reservoir tank is brown, it can be confirmed that your vehicle's radiator is rusted.

Read Also: Here are the Effects of Leaving a Damaged Radiator Cap

Not only that, you can also determine the condition of the rusted radiator by checking the hose of the reservoir cap or draining the contents of the reservoir tank. If you find brown rust-colored sand, it also indicates that your vehicle's radiator has rusted.

How can you determine the condition of the rusted radiator by looking at the contents of the reservoir tank? This happens because the circulation or cooling process of the vehicle's engine can also carry rust residue into the reservoir tank.

3. Check the Plates Inside the Radiator

The next way to identify a rusted radiator is by checking the plates or grids inside the radiator through the water filling hole. The steps you can take are to drain some water from the radiator until the internal grid is visible.

Next, check the condition and color of the grids inside the radiator using a flashlight. If the grids are silver or white, it indicates that your radiator is still normal. However, if the color is brown to black, it means the radiator is rusted.

The Importance of Checking for Rusted Radiators Before Buying a Vehicle

If you are going to buy a used vehicle, do not forget to check the physical condition of the vehicle, including the radiator.

However, if you are interested in bringing home a new car, you can visit the offer page daihatsu.co.id to find many interesting and quality car variants.

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