My Scangauge is set to 1.9 liters, dieselA and -21% fuel. This gives me accurate mileage estimations for my daily commute, but I suspect it is significantly off on idle fuel consumption. It shows 0.09 gph when warm at idle.
However, I don't know what it really is because I went on a 360 mile road trip through the mountains last weekend, and with all the coasting and engine braking, as well as all the hill climbing, my scangauge mileage was 65 mpg at the end of the trip. Actual tank mileage: 50mpg.
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I'm not coasting, I'm shifting slowly.
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