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buy two gallons of dexcool antifreeze.around 25.00 a gallon.some go for full strenght or a 50-50 mixture,half anti-freeze and half water.locate peckcock at bottom of radiator and drain old anti-freeze out.there maybe a bleeder vavle on manifold to open up so air can escape out.pour in anti-freeze and close valve. job is done but never ever do this when engine is hot.a cold engine will prevent you from getting burned by hot anti-freeze.

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Q: How do you a change antifreeze in a 2003 Monte Carlo?
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