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Turn the heater control to hot. Drain the radiator, and flush it with a garden hose and plain water. Install a new thermostat. Pour in a 50/50 mix of antifreeze and distilled water. Use the Schrader Valves to remove any trapped air from the system. They are found on the upper part of the cooling system and look like tire valves. Top off the radiator and overflow tank, and start the engine with the radiator cap off. watch for air escaping from the radiator, and put the cap on when you no longer see air bubbles. Use the Schrader valves to bleed any air left in the system one last time.

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15y ago
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Q: How do i put antifreez in my1991 Honda accord?
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