Engine coolant removal and refill method and device
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United States of America Patent
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Apr 30, 1996
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N/A
app pub date -
Jul 27, 1993
filing date -
Jul 27, 1993
priority date (Note) -
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Abstract
In an automotive cooling system made up of a radiator, overflow bottle, engine and heater core members, a method of removing spent antifreeze therefrom involves applying air pressure at the highest vertical point of the cooling system members, and draining the antifreeze via the lowest vertical point thereof. A method of refill via the radiator or pressurized overflow bottle involves utilization of a refill element with vacuum and coolant prongs. Simultaneous vacuum and refill of coolant is achieved with the refill element.
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