7.3l Mileage
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Junior User
Joined: Aug 2020
Posts: 51
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From: Texas
7.3l Mileage
I have seen lots of diesel numbers for mileage, but only 5 Star Tuning has posted some gasser numbers. I did not buy a 250 with the 7.3 for gas mileage. I am just curious. I have just under 700 miles on my truck and probably mostly city driving and I am topping out at 11.4 MPG. Come the holidays, I have a few 1000 plus mile trips planned so I will have a better idea for highway miles. Thanks all
7.3L Lariat 4x4 with 4.3 diffy.
7.3L Lariat 4x4 with 4.3 diffy.
Junior User
Joined: May 2020
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I'm approaching 700 miles on my truck, as well, and have probably close to a 50/50 split between highway and city driving. I'm averaging about 12.5 mpg overall right now. I've only got one fill-up under my belt and one thing that confused me is that the truck said under 50 miles until empty yet I was only able to put in 35 or so gallons. Seemed off considering I've got a 48 gallon gas tank.
Mountain Pass
Joined: Mar 2020
Posts: 248
Likes: 4
I have seen lots of diesel numbers for mileage, but only 5 Star Tuning has posted some gasser numbers. I did not by a 250 with the 7.3 for gas mileage. I am just curious. I have just under 700 miles on my truck and probably mostly city driving and I am topping out at 11.4 MPG. Come the holidays, I have a few 1000 plus mile trips planned so I will have a better idea for highway miles. Thanks all
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Junior User
Joined: Aug 2020
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From: Texas
JEMetzger.... I only have the 34 gallon tank and my i keep two sets of numbers: 1 the MPG provided by the ECU (or whichever system controls it) and the one I calculate directly from the miles and the gas receipt. I have not seen an issue with the DTE numbers (yet :0)
Laughing Gas
Joined: Jun 2020
Posts: 778
Likes: 14
From: Seattle area, WA USA
See the MPG stickies in the 7.3L sub-forum: https://www.ford-trucks.com/forums/forum307/
In my first 3300 miles, I'm at 14.3 MPG overall, 14.9 Highway, 13.3 City, and 10.3 on mountain dirt roads.
Note: I have the 3.55 final axle ratio. The numbers above are actuals from my log book, not the lie-o-meter, which is actually pretty close in my case.
In my first 3300 miles, I'm at 14.3 MPG overall, 14.9 Highway, 13.3 City, and 10.3 on mountain dirt roads.
Note: I have the 3.55 final axle ratio. The numbers above are actuals from my log book, not the lie-o-meter, which is actually pretty close in my case.
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Junior User
Joined: Aug 2020
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From: Texas
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Senior User
Joined: Jun 2020
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From: Gretna, NE
CCLB with 4.30 gears. Got 15 going 60, get about 14 going 70+, but drops considerably with city driving to around 11-12.5. Got around 7.5-8 pulling my 9000 lb travel trailer. Pulling was in some hilly terrain, so not sure how it would do on flat ground.
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Mountain Pass
Joined: Jun 2020
Posts: 248
Likes: 40
From: Texas
7.3L , 3.55 gears ccsb fx4
12.7 mixed everyday driving via the lie-o-meter
Last 200 mile freeway trip i took I averaged around 18 mpg according to the computer but gas pump numbers put it around 17.
12.7 mixed everyday driving via the lie-o-meter
Last 200 mile freeway trip i took I averaged around 18 mpg according to the computer but gas pump numbers put it around 17.
Junior User
Joined: May 2020
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Filled my truck up for the second time today. Averaging 12.1 MPG through 900 miles.
I waited until the DTE indicator showed less than 50 miles. I was able to put in 38 gallons (as opposed to 34 at my first fill-up), but that still doesn't seem right considering I'm supposed to have a 48 gallon tank with a long bed crew cab. At full, the DTE said 493 miles. I would expect to be closer 575 based on the MPG. For those with the 48 gallon tank, what does everyone else's truck read when you first fill up?
I waited until the DTE indicator showed less than 50 miles. I was able to put in 38 gallons (as opposed to 34 at my first fill-up), but that still doesn't seem right considering I'm supposed to have a 48 gallon tank with a long bed crew cab. At full, the DTE said 493 miles. I would expect to be closer 575 based on the MPG. For those with the 48 gallon tank, what does everyone else's truck read when you first fill up?
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Junior User
Joined: Aug 2020
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From: Texas
On a short box, 34 gallon tank mine says approx. 310 miles to DTE after a fill-up. Not sure that helps being a different tank. I always keep track of the vitals of my truck. The computer MPG is matching my calculated MPG pretty close. I am not at home so I will check my actual numbers when I get home.