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Most commonly this is due to overheating or a blown head gasket. Overheating causes the coolant to expand, and rush into the resevoir, then overflow it. When cool, the coolant that remains will be sucked back into the engine. A blown head gasket can cause the coolant to enter the firing chambers of the engine then be blown out the tailpipe, or the compression can leak into the coolant area and push the coolant out, or allow the coolant to get into the oil pan.

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โˆ™ 2005-04-21 07:27:04
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Q: Why would you lose coolant in the reserve bottle of a 1995 Civic even when radiator hose pipes are in perfect state?
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Related Questions

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