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Old 12-27-2013, 10:20 PM
Asur Asur is offline
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2hrs plug in time will bring the temps up 32 degrees from whatever outdoor temp it is, 4 hrs, 36degrees, this is what block heaters do, after 4hr it will just waste energy and will never get any higher then the 32 degrees up from the outside temp. So at -32 your engine will end up at 0 if you plug it in for 2hrs.
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