Quote:
Originally Posted by jamesqf
But the heat from gasoline is free (if you warm up while driving, instead of idling), while a large fraction of the electricity you use for block heating is wasted, if your goal is simply a clear windshield.
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No, heat from gasoline isn't free if longer warm up time means more fuel is used (running longer in open loop, greater windage losses etc). That's without factoring in engine wear.