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Old 08-10-2010, 10:45 AM   #141 (permalink)
Olympiadis
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Join Date: May 2010
Location: Illinois
Posts: 184

White2003Focus - '03 Ford Focus SE 4-door sedan
Team Ford
90 day: 38.53 mpg (US)

White2001S10pickup - '01 Chevy S10 extended cab LR
Last 3: 24.51 mpg (US)

1989DodgeOMNI - '89 Dodge Omni
Last 3: 30.38 mpg (US)

1991ChevyC1500pickup - '91 Chevy C1500
Last 3: 24.03 mpg (US)

White1986Irocz - '86 Chevy Irocz LB9
Last 3: 30.14 mpg (US)

1999 C5 Corvette - '99 Chevy Corvette

2008 Infinity G37 - '08 Infinity G37
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Quote:
Originally Posted by dmac257 View Post
when you say "gearing sweet spot" are you stating a physical speed that is a "design spec" ie. something I can look up someplace or something that I would need to measure by making runs at different speeds and calculating? I don't have any way to measure mpg in real time so would be interested in knowing this "sweet spot" for my cars.

The optimum speed for best MPG is a balance of a great many factors, and many are not constant. For this reason it is always changing with conditions, for example the changing inclination of the road.
You need a real-time feedback to fully utilize this information.
In a pinch a vacuum gauge can get you pretty close.

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