> There is another reason for preheating;the engine lasts much longer.
 > 
 > I know of one Mercedes 4 cylinder car that has had its (gas) engine 
 > plugged in every night from new,and it's still going strong after 500,000 

 > miles.
Rick,
 I agree with that. Although I'm not that fanatical, I plug in my VW when 
it's going to get below 20 degrees. Besides it starting easier, and wearing 
less, I have warmth from the heater pretty quickly!
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