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Old 06-18-2008, 07:08 PM   #12 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 57.73 mpg (US)
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Quote:
Originally Posted by RH77 View Post
Which parameters to choose?
Even if you could compute FE from the params, would you be confident you could distinguish a few percent difference, if any, by switching fuels?

Unless you burn a LOT of fuel driving the exact same route day in & day out, you're facing the same data reliability issues everyone has who wants to test fuel and/or additives.

That said, by default, I think I'd probably go with regular in a car with a knock sensor.
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