The car radiator is responsible for preventing the car engine from overheating. When the engine is in use, it produces a lot of friction and heat, and the radiator uses coolants to keep the engine running at a healthy temperature.
The radiator is connected to the engine with channels through which a liquid is pumped. This liquid can be water or another coolant, such as antifreeze. By taking the liquid through the engine, it heats up the liquid and takes it outside of the engine to let it cool down. It is usually located in front of the vehicle's grill in order to benefit from the airflow as the the vehicle moves.
If there is not enough coolant, the engine can overheat. It is important to keep an eye on the coolant levels, and rather than opening the radiator cap to check, the coolant reservoir should be looked at under the hood. If the liquid does not reach the line marked "full," coolant should be poured in until it reaches the line. Some coolants are premixed, others are concentrate. If it is concentrate, a mix of 50 percent coolant with 50 percent water should be made, or the directions on the bottle should be followed. The coolant should never be filled while the engine is hot as it can harm the engine. If the coolant has bits floating in it, the system should be flushed. A sludgy or oily surface is an indicator of a possible head gasket leak.