Ok, got the SG calibrated to speed shown on GPS, which is different than the speedo shows.
Drove in to work this morning and display shows 36.3mpg.
So, either 1) the SG isn't calibrated properly (though the manual pretty clearly states this is the only parameter affecting distance)
Or
2) I have been doing much better than I thought all along and the odo has been lying to me about my distances.
Am I missing something?
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