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Old 05-31-2015, 07:13 PM   #2 (permalink)
gone-ot
...beats walking...
 
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Same "efficiency" works here in Arizona...use heater in A.M. to ensure immediate warm-up and highest vehicle MPG...right from the start.

As you mention, the only question is "how long" warm-up is needed and is it cheaper than the gasoline savings.
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