Definition: A valve, located in the cooling system of an engine, which is closed when cold and opens gradually in response to engine heating, controlling the temperature of the coolant and rate of coolant flow.
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Related Resources:
Cooling Systems: Part 1
How this important system works and helps your engine keep its cool.Cooling Systems: Part 2
How this important system works and helps your engine keep its cool.Antifreeze: Red or Green
Dexcool® or regular antifreeze? Which antifreeze to use and why.
© 2000 - 2002 Vincent T. Ciulla
