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Old 10-02-2009, 03:13 AM   #9
btwilson86
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Any leak in the cooling system will result in it not easily sucking the coolant back from the reservoir. As the coolant cools down, the pressure drops which creates a vacuum in the system. This is what draws the coolant back in. If there is a leak, the cooling system could draw in air (which is easier for it to do) instead of that coolant, leaving it all in the reservoir
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