When a car is driven, it generates a lot of heat. The work of a radiator is to dissipate this generated heat, to ensure the vehicle continues to function smoothly and keep the occupants safe, as well as other components of the vehicle. It is the center of all the cooling duties. If it were not present, a car's engine would have overheated and gotten damaged, as well as damaging other parts of the car anytime it was driven.
A radiator on its own cannot dissipate all the heat. There is normally a liquid circulating between the radiator and engine that collects the heat from the engine called a coolant. This coolant needs to be regularly replaced, in order for the radiator to continue functioning properly. This liquid also comes in handy during winter to keep the engine from freezing, thus its other name of anti-freeze.
These two have a standard system of operation. Most radiators are constructed from aluminum since it is a good heat dissipating material. It is also light in weight. The radiator works when it sends the coolant into the inner parts of the engine, where it collects the heat generated. The hot coolant flows back into the radiator, where it is once again cooled down as the heat is lost. It is flown back into the engine, repeating the cooling process. This cycle remains constant as you drive.
In the past, there was no coolant. Water used to be what was driven into the engine. With time, bigger engines were made, which made water not a viable option. It would boil within the engine, thereby damaging it. The invention of coolant came at an opportune time. The amount of heat it can withstand dwarfs the achievements of water, which makes it the best solution.
The one thing that hampers the perfect functioning of a radiator is leaks. When coolant leaks, the performance suffers as a result. The engine can overheat as sludge forms in the radiator. This would also hamper the functioning of other vehicle components. When coolant tubing gets damaged, you will see such problems cropping up. The vehicle needs to be inspected on a regular basis, to ensure such fractures and breakages are arrested in time. Check this website at https://www.performancecooling.com/about-us/ and know more!
Another issue that could crop up in radiators is damaged fan belts. When it ceases to function properly, there won't be adequate pumping of the coolant through the entire engine block. It needs to be repaired as soon as damage is spotted. There have been cases of coolant leaking due to tubing that was not properly fixed. Such an issue can be fixed when the proper attachment of the clamps is done. When all else fails, it is advisable to replace the entire system at https://www.performancecooling.com/service/.