How to clean the radiator flash

The benefits of cleaning the radiator is our topic today, as we will discuss how the radiator is cleaned with a flash, with the need to note the importance of continuously monitoring the cleaning of the radiator, as the presence of dirt or sediment may be the cause of water blowing from the radiator, which of course affects the car’s engine and its entire operating system, and you may notice This is easily done when the car's temperature rises above the normal limit.

It is necessary to use water designated to cool the car, not to have diarrhea, and to use plain water because of the danger it poses to the car:

Its long life span, which is estimated at more than three years, during which it can work with great efficiency.

Contributes to maintaining the car's radiator, while cleaning the radiator with flash from time to time.

Preventing the formation of rust in the internal parts of the engine, which protects it from corrosion.

Preserving internal engine parts from rust or corrosion.

Benefits of cleaning the radiator with liquid

The benefits of cleaning the radiator are limited to maintaining the car, as cleaning prolongs the life of the car and improves engine performance. Below are the most important benefits of cleaning the radiator:

Maintain a normal level of car coolant temperature.

Eliminate accumulated deposits as well as remove rust.

Preventing rust formation and protecting the engine from corrosion.

Enhance engine power.

Ensure efficient engine operation at normal temperature level.

How to clean a car radiator

There are some steps that are recommended to be followed when cleaning the car's radiator, and it is not possible to exactly determine the price of cleaning the radiator because that is determined by the technician according to several factors. As for the correct steps for cleaning the car's radiator, they are as follows:

Turn off the car engine

Open the hood of the car to keep the engine cool.

Use the winch to lift the car and adjust the brakes.

Bring the radiator cleaning fluid, and as we indicated, the radiator can be cleaned with a flash, added to the car engine, and then run for 10 minutes.

Follow up the engine temperature until it rises, and the engine is turned off immediately.

Empty the engine of the cleaning solution.

Add distilled water to the car's radiator, then run the car for 10 minutes before draining the distilled water again.

You must wait until the engine has completely cooled down, and then add a diluted coolant solution.

Make sure the engine is safe and that there are no holes or leaks in it, then start the engine, and wait for some time before driving the car until the air is emptied from the radiator.

Types of radiator cleaning fluid

There are several types of radiator cleaning fluids that may differ in consistency, but they all lead to the same result with the difference in the effort required to prepare them. The radiator can be cleaned with flash, water, or some other liquids. Below we mention the most popular fluids used to clean the car’s radiator:

Flush radiator cleaning

Flash is one of the most common types used in cleaning car radiators, as cleaning the radiator with flash is very easy, so it is preferred by beginners in the automotive world, but it is necessary to dilute the flash with water before using it to clean the car’s radiator, and once you use it, you will get a great result.

powder solution

The powder solution for cleaning the car’s radiator has a long shelf life. Despite this, it is the least common cleaning fluid, as a result of the negative aspects of its use, which are: its danger to health, the necessity of having certain tools to prepare it, and that it takes a bit of time and effort to prepare it.


Water can be mixed with some chemicals and used as a car radiator cleaning fluid. This helps positively in getting rid of deposits and accumulated oils. Using this method is very simple and easy and can be repeated when needed without fear of any risks to human health or the car.

Signs of a dirty car radiator

There are some signs that appear indicating that the radiator needs to be cleaned, and these signs are as follows:

The car's engine temperature is too high.

Red, green or yellow coolant leaks under the car.

Difficulty shifting gears in all types of transmission.

A problem has occurred in the car's heating system due to a coolant leak, so you must recognize the signs of air in the cooling cycle.

How often should the car radiator be cleaned?

The car's radiator must be cleaned from the outside and inside according to a special schedule set by the maintenance company that manufactured the car. In most cases, the car's radiator must be cleaned every five thousand miles, or every two years. Some advise using some organic compounds to clean the car's radiator once every five years.