You need to have your engine cooling system flushed occasionally to protect, de-scale and replace your coolant/anti-freeze. This is vital to maintaining quality engine cooling levels and protecting your vehicle from summer heat and winter cold. Over time and extreme temperature, your coolant begins to break down. It begins to leave deposits. If not maintained, the deposits can clog and restrict flow, may plug the radiator or heater core. An overheating event can destroy your engine, crack your head or block. These are expensive repairs that could be avoided with a simple preventative flush service.