Berdhuis Wrote:
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> ITRADE Wrote:
> --------------------------------------------------
> -----
> > 10 mph actually worsens gas consumption.
> Optimal
> > engine performance is in 4th or 5th gear at 45
> to
> > 60 miles an hour.
>
> Engine performance is not the only factor
> influencing fuel consumption, the bigger factor is
> air-resistance. Air-resistance is many times
> higher at 45-60 mph than at 10 mph. 10mph in 2nd
> gear can roughly equate to 45 mph in 4th or 5th
> gear in terms of rpm's, with regard to engine
> performance. One just need look at the tachometer.
> The engine doesn't know how fast the car is going
> - mph, it only knows how fast IT is going -
> rpm's.
>
> Your argument based on engine performance fails.
http://eartheasy.com/live_fuel_efficient_driving.htm
http://www.fueleconomy.gov/feg/driveHabits.shtml
What more needs to be said?