You can also follow these are 5 maintenance tips to keep your car radiator functioning optimally: 

1. Always use the right coolant

Only use coolants specific for your make and model of car, and don’t mix coolants. The requirements for aluminum and copper-brass radiators may be different and the usual coolant may not suffice.

Regularly flushing your radiator
Every 12 months or 30 000 km’s a radiator flush and engine coolant replacement will remove the build-up of rust and residue and keep your radiator working properly

Maintain the hoses and check for leaks
Look for leaks and cracks in your radiator hose every time you change the oil in your car. Check also for rusted clamps and make sure your gasket that’s fitted to your radiator cap is still ok. Look for visual signs of leaks or drips under the engine.

Fluid check
Maintaining proper levels of coolant is vital. It will not only stop your car from overheating in hot weather but also stop fluids from freezing in very cold climates.

Don’t overload your vehicle
The heavier the load your vehicle needs to carry, the more your radiator needs to work to cool your car down. Overloading is a major factor in your car overheating as the load on the engine is increased and thus puts your car under extra stress.