the gauge is not a reliable means of knowing your consumption...
i did not get 400 miles from a tank of gas on this trip.
what i have learned from my gauge:
- needle hits 3/4 tank after about 50 miles.
- needle hits 2/4 (

) tank after about 200 miles.
- needle hits 1/4 tank after about 260 miles.
- gas warning light comes on around 310 miles.