Maintaining your cooling system by filling and flushing the coolant regularly, as well as monitoring for pressure issues and coolant leaks, will result in more efficient cooling. A well-maintained radiator should survive for many years, but there are some situations where the radiator should be replaced. The temperature gauge is climbing unusually, smoke pouring from the hood of your car, the green liquid seeping from underneath your car, and rust in the cooling system are all indicators of a failing radiator. A leaking radiator could cause coolant and transmission fluid to mix, which is a significant issue. A radiator is considered a type of heat exchanger. It is intended to transmit the heat generated by the hot coolant that flows through it to the air blown by the fan. If the radiator is unable to perform its primary function of exchanging heat, it may cause damage to certain components of your vehicle’s engine. If your vehicle is still not adequately cooled after maintenance, you may need a replacement radiator. The radiator core is the radiator’s largest component and serves its primary function. It is made up of a giant metal block with small metal fins that allow the coolant to release heat into the surrounding air.