Radiator cleaning

Why does a radiator need a clean out?

Have you noticed some unusual symptoms with your car’s cooling system? Things like engine overheating, poor internal heating and radiator leakages?

The potential culprit is a blocked or clogged radiator, usually caused by old or contaminated fluid in the system which can obstruct flow through the radiator fins and tubes.

This can lead to decreased performance and potential failure of other cooling system components. The good news is you have a few options to get things running smoothly again.

Natrad technicians are qualified experts in cooling and can provide quality advice for your auto cooling needs. We supply and service all kinds of radiators, keeping you on the road.

Where to start?

First of all, the use of terminology should be cleared up here. A radiator clean out refers to a process in which the radiator needs to be removed from the engine bay. The inlet tank is disassembled from the radiator core and then each individual tube is cleared of blockages to ensure optimal performance.

Some may confuse this with a radiator flush or cooling system flush. A radiator flush is a chemical treatment that is added to the cooling system, which will help remove scale and build-up of debris. A power flush is then performed to expel the build-up from the system. A new coolant solution can be added after this process is completed and will assist in returning optimum performance to the system.


Determining whether your radiator is viable for a “clean out” is the next step. Plastic aluminium radiators are not ideal as they aren’t easy to disassemble for this process.

If you have an older vehicle with a copper brass radiator, these are easy to disassemble. If this is you, then a radiator clean could be a good option, followed by flush of the system which will ensure the radiator continues working properly.

In the instance that there are any failed components in the system, a flush will need to be performed anyway before any replacements.

However,  if you have a full alloy or plastic aluminium radiator, you may be better off with a re-core or replacement. Natrad offers high quality re-core services as well as a wide range of radiator replacements that may suit your vehicle. Contact your local workshop today for expert advice in cooling system repairs.


Speaking to a cooling specialist can guide you in the right direction for your car. Natrad can test your cooling system for any leaks or failing components and advise the best course of action. If there are any issues diagnosed during a car service, our mechanics can confirm whether you need replacing or repairing.

All cooling system checks are part of a free offer to all auto services. Nip into your local Natrad location today to get started with a cooling system check.

Ready to choose?

If you think you’re ready to take the next step, get in touch with your local store for more details. No matter you need, Natrad can help. Our radiator specialists will evaluate your vehicle and offer you clear, transparent advice on products and servicing.

As part of our commitment to our customers, we always try to keep costs as low as possible. If you need a radiator clean out or radiator flush, we can get the job done quicker, better, and more cost-effectively than our competitors.

When it comes to checking the cooling systems in your car, there’s no one more qualified than Natrad. Our experts can provide you with quality advice on all your auto cooling needs. We also supply, service, and refurbish all kinds of radiators.