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So, what can I look at to improve in town MPG?

Try accelerating 11000. I have not checked it this winter but about 15 for summer driving is normal for the F250. Last winter it had some ignition problems that did not get fixed till the summer blend became available so have not done a comparison as yet.
 
Rusty Junk said:
My fuel mileage in my Expedition drops from 17 to 13.5 as soon as it gets cold and my driving is 70 percent hyway. If I stay at 55 it stays at 18 or 19 but the city driving kills the mileage. It takes fuel to accelerate 6300 lbs.
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My Dodge diesel is almost 6200 and it gets 17-19 in town and has pulled down 25 on the highway doing 65 but around here, you'll get run over if you ain't doing at least 75!.
 
Check that the brakes are not dragging more than normal.
Make sure the oxygen sensor is working well.
Check the throttle body for carbon build up.
Replace spark plugs and wires if they are old.
Make sure the coolant temp sensor is reading right.
Look for vacuum leaks.
A gear change may give more power but can lower fuel use only in some driving.
 
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