good to hear you like your stang. as for how often you need to put water in the car, how often are you putting water in the car? are you filling the radiator to the top each time? if so then STOP. the cooling system will find its own proper level after the engine has warmed up, and it will blow the excess coolant out. what you want to do if fill the radiator once, then drive it around until the engine is good and warm. park the car and let it cool off, then check the level. do not refill the radiator if you see coolant when you remove the cap. check the level each day when the engine is cool to determine where the cooling system wants the level to be, or to determine if you are losing coolant. hint, if you fill the rad, then drive it, and then let it cool, and recheck and you see no coolant in the system, chances are good that you have either a leak or an air bubble that needs to work itself out. if you are constantly adding water, then you likely have a leak.
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