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Old 07-11-2008, 08:05 AM   #8 (permalink)
dcb
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Quote:
Originally Posted by texanidiot25 View Post
...but that's about as much as I'd want to insulate the cooling system on the car.
There is a seperate thermos type resivoir on the prius, and when the car is shut off they pump it full of hot coolant. So when the car is restarted they put the hot coolant back in to the main system and "preheat" the engine a bit without wasting hardly any energy to do so.
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