Since your car is comprised of countless moving components, a friction is also produced. This friction consequently generates heat. Motor oil is being pump throughout the engine block to give lubrication, however, these are not enough to prevent excessive heat energy, and thus it causes the engine parts to boil in a very hot temperature. To prevent serious problems such as overheating, the engine must be cooled up. When the pistons cannot slide freely in their cylinders because of the unnecessary friction build up, they will snap and will cause an engine failure. To avoid such, a certain mixture of antifreeze and water is being draw into the chambers in the engine block to suck up the extreme heat and consequently draws it away from the important areas. And once the superheated engine coolant departs the engine block, it will come back to the radiator all the way through a large rubber hose. Your Geo radiator is engineered to amplify the surface area by using a number of internal folds and chambers and as the superheated engine coolant travels through the sides and crevices, extreme heat is drawn out to the radiator walls. So, when you car moves, the radiator front is being cooled up by the outside air coming from your car's grille. If you need a replacement radiator; you can always visit our online store, if you consider quality and durability, we offer you our Geo radiator. Our Geo radiator will surely prevent your engine from constant overheating. 50 words