I remember seeing one gaslog where the person was reporting by trip (don't recall who). "Per fill" seems to be the standard, though.
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Originally Posted by StanleyD
Maybe when I have scanguage I will have scanguage reset for each tank and I can get exact data for gallons used on a tank instead of relying on how much gas is needed to fill car (which will prob always be off by a measureable amount, although not by much)
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Well, there's sort of a Catch 22 there, because the Scangauge needs to be calibrated, and you do that based on how much gas is needed to fill the car.
So, "six of one and half a dozen of the other," as my mom used to say.
I've been through enough fills now that my readout's quite accurate, but I'm still reporting FE based on odo mileage and fill gallons, just because that's how I started my gaslog. Either should work for you though, and no calculations needed if you go with the Scangauge numbers.
Just remember to jot 'em down before you hit the fill-up button! (Been there, done that.
)
Rick