i coudn't find a gas log w/ the AT.
with a 3 speed auto you certainly will be limited especially on the highway. the old EPA estimates are 30/34 MPG. this is what i use because they should be able to be duplicated AND even improved on with hypermiling.
http://www.fueleconomy.gov/feg/calcu...umn=1&id=13348
that's a starting point, so i hope it helps! best wishes.
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