Your cooling system protects the engine from overheating, supplies heat to the inside when it is cold out and keeps your motor oil from breaking down. A leak or a low coolant condition in your cooling system can cost your way more than what it will to maintain it. Old coolant will not be able to lubricate your water pump properly, increases in it's PH balance causing internal wear to components that come into contact with coolant and at an extreme it will cause your head gasket to fail casing overheating and at least a couple of thousand dollars.
Let us keep the coolant fresh and your cooling components reliable so you can have confidence in your vehicle and drive it for many more miles all saving you money in the long run.