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what is a realistic fuel economy on a stock 7.3 excursion?

86K views 22 replies 19 participants last post by  scagle1  
Ive driven all interstate road trips and got 21.5 . we get about 16 -17 in town. Its running stock with 3:73 gears running LT285/75R17's

Ours is a 2000 Ex &.3 with 315,000 miles