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Old 07-24-2008, 04:28 PM   #13 (permalink)
azraelswrd
Mr. Blue Tape
 
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Join Date: Jun 2008
Location: Fresno, CA
Posts: 345

AzxA - '06 Scion xA
90 day: 42.72 mpg (US)
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My scangauge will pay itself off within 9 to 10 months (assuming gas stays over $4/gall)

Here was the article on idling times:
Is it more efficient to leave your car idling? - By Brendan I. Koerner - Slate Magazine

...but it was in terms of a 6cyl engine so that might make a difference -- how much, I don't know. I just go by the 10sec rule (and make sure its not illegal to shut off your engine while stopped at a light). So far, I've shut off at a red light once because I've been getting better with timing my arrivals at stop lights.
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My 5 pillars of fuel efficiency:
  • driving style
  • aerodynamics
  • tires
  • weight reduction
  • engine maintenance
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