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Gas Mileage- F350/F450/F550

31373 Views 17 Replies 10 Participants Last post by  unkownfl
Can anyone tell me the gas mileage difference between F350, F450, and F550 (1999-2001 models with 7.3 diesel) on the interstate?

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You gain mileage red light to red light with the taller gear but lose on the highway. Its a trade off for what best suites you thats why its a option. To sorta answer your question 4.88 in a 04 6.0 f550 around 11mpg pulling 10k lbs and 4k in the bed plus the steel body. 50/50 mix of highway and city plus a lot of idling about a hours worth on a tank.
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