A number of engine cooling systems in most cars of today employ a transparent plastic container that is connected to the overflow tube from the radiator. This particular container gives added storage area for the coolant when it expands. This container is sometimes called as the overflow tank but is more commonly known as the expansion tank. Sometimes known as the coolant reservoir or the overflow canister, the expansion tank is an indispensable component of an engine cooling system. Each time the engine starts to experience a heat build up, the coolants in it start to expand. In the absence of an expansion tank, the coolant would flow away from the overflow tube and be spilled from the cooling system out into the road surface in which you are traveling on. With the expansion tank, the coolants are made to flow to it. Because of the fact that a vacuum is produced in the engine cooling system each time the engine is cooled, it makes it possible for some of the coolants in the expansion tube to return to the cooling system. The cooling system with an expansion tank is considered as a closed system thus allowing the coolants to flow to the cooling system and the expansion tank as it expands and contracts, respectively and vice versa. In this manner, the system will not lose the coolants and helps the entire system perform its tasks efficiently. A damaged expansion tank could not do so much for the engine cooling system, which is why a Dodge expansion tank replacement will always come in handy. The Dodge expansion tank replacement is also designed to eliminate air bubbles from the cooling system for higher efficiency. This way, the coolants absorb heat from the engine parts more easily. Whenever you are in need of an expansion tank, just visit our website.