When your car starts overheating or leaking underneath, that is when you know you have problems with your car radiator. This can happen despite how well-maintained your car is. The radiator is just one of those parts that need to go through special or intense cleaning since it can easily get clogged with rust.

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If you don’t clean this part, it may cause permanent problems for your car’s engine. There are many ways to clean a car radiator, and one of these special cleaning techniques includes the usage of baking soda. Are you wondering how to clean a radiator with baking soda? Let’s learn here.

Contents display
1 How to Clean a Radiator with Baking Soda?
1.1 Step 1: Safety First!
1.2 Step 2: Stop Your Car
1.3 Step 3: Preparations
1.4 Step 4: Open the Valve
1.5 Step 5: Baking Soda
1.6 Step 6: Baking Soda and Vinegar
1.7 Step 6: Draining
2 Final Words
2.1 Related Posts

How to Clean a Radiator with Baking Soda?

Using baking soda is just one of the many ways to clean your car radiator. Aside from this, there are car owners who like to use a radiator flush product to clean out their radiator.


You can now add the solution to the cooling system. Close the bleed valve and go back inside the car and start your engine until the engine heats up. Pressing on the accelerator a few times with intervals will make this healing process go faster.

The baking soda in the solution will help unclog the pores that are filled with rust or dirt. It breaks down the particles off the radiator’s walls until it is smooth and clean.

Step 6: Baking Soda and Vinegar

Another cleaning solution you can make is with baking soda and vinegar. These two items are very popular as homemade cleaning materials, and they work together very well too.

You can use this mixed solution of baking soda and vinegar to clean your radiator too because vinegar works as acid and lifts stains while baking soda works as a base and softens corroded bits since it creates carbon dioxide gas and salty water. So, the combined reaction of this cleansing gives you better and quicker results.

When you create this solution, you need to add 6 tablespoons of baking soda and 6 tablespoons of vinegar along with 1 liter of water. Pour this solution in, and you will get a bubbly or foamy reaction. That is a sign that the solution is reacting with the rust and dirt and already breaking it off.

After this, you can follow the same method of heating your engine to let the chemicals boil up.

Step 6: Draining

Turn off your car and let it cool before you go near the engine. When it is cool, you can now open the bleed valve again.

The cleaning has already been complete by now. Drain the radiator again and then pour in some distilled water and flush it out a few times. By then, your cooling system will be completely clean. You can fill it up with some new coolant and close up the bleed valve.

Final Words

The technique of using baking soda is the cheapest way to clean your radiator. Plus, baking soda is an item you will generally have in your home, and it is always available in stores. It is a popular cleaning material that is safe for you and your engine, unlike those expensive and strong reactive chemicals other people use.

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So, I hope you now know how to clean a radiator with baking soda and can act by yourself.