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Old 08-20-2016, 03:41 PM   #103 (permalink)
The donkey CRX
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I'm not aware of any thermostat that will block 100% of the water exiting the block when the engine is running. It may be because the mechanical water pump needs some water flow at all times in order to work properly.

I did read that the super efficient VW XL1 uses an electric variable speed water pump that can be completely turned off when more engine heat is needed. Of course this is computer controlled.
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