Pontiac Engine Cooling System Upgrade - Keep A Cool Head
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The ideal is to be less than 5 percent water on a refill such as ours. The GTO tested at 4 percent. At the time of publishing the prices were: Prep Fluid, $27.75/gallon; NPG+, $32.50/gallon; water pump, $189.95; thermostat, $9.95. View Related Article
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