Welcome to the site...
Use that ScanGauge to it's fullest. Small incremental improvements in FE, equal larger percentages in vehicles with low FE. So, if you started at 15 and went to 20 MPG, that's a considerable improvement, for example.
Apologies, but you'll probably get razzed for your vehicle choice... but do what you can with what ya got. Getting a small car to commute may pay for itself quickly, or it might not be feasible in your application. Do some calculations and soul-searching for priorities. The cycle helps offset fuel consumption -- ride sharing can too.
If you can't downsize, check out the "Newbie" thread in my sig. Plenty of good places to start.
Best FE to ya...
RH77
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