compared to a life-support team whose function is to back up the engine and make sure that it performs at its best every time you are out driving. If it fails like one of its components break down it can cause engine overheating. Since the cooling system is made to accomplish critical tasks almost every day of your car's life, it is secured with reliable components which help it carry-out its function. Aside from the radiator, there are other vital components present in the cooling system and one of them is your Cadillac expansion tank. Now, why would the system need an expansion tank when it already has the radiator? The coolant when heated expands thus it needs extra space where it can stay temporarily. This is where the expansion tank in your Cadillac comes into action. Your Cadillac expansion tank is needed to transport the expanded and heated coolant as it makes a return trip to the radiator. It also serves as the provider of the extra room that the radiator needs for the coolant before it can finally return to the radiator to be cooled again. Without the expansion tank, the coolant has the tendency to spill out of the car and end up flowing on the streets. The expanded coolant may lose its track to the radiator and might found dripping on the grounds if in case your Cadillac expansion tank is damaged. The coolant is important to the engine and to the cooling system as well. That is why you have to check on each vessel where it usually passes or dispense itself like your Cadillac expansion tank. You can visit our company website if you are looking for a new Cadillac expansion tank replacement. We offer them in affordable prices too.