fuel milage check
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More Turbo
Joined: Dec 2003
Posts: 510
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fuel milage check
My son was out of school the other day and I got the chance to drive the old truck.I want to make a road trip for a milage check but took advantage of this.It was 40 miles round trip,all highway probably kinda short for a good average.I filled up before taking off and then when I got back to town and figured 16.3mpg.I also found out when I got home the hubs were locked.How much difference should it make for the hubs to be unlocked?I would think it would make some difference but I wonder how much.O yea,it's a 94 f250 4wd 7.3 turbo E4OD auto with 4.10 gears.
Posting Guru
Joined: Dec 2009
Posts: 2,322
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From: Dairy, OR
I live in snow country and drive 45 miles round trip to work and back daily. I have left my hubs locked in for an entire week for "just in case" roads and my mileage didn't change at more then .3 mpg.
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
I was going to guess about .5 MPG at best.
That is about what I notice, and mine may be slightly more since I have limited slip in the front axle.
You can feel it pull when you turn the wheels with the hubs locked running in 2 wheel drive.
That is about what I notice, and mine may be slightly more since I have limited slip in the front axle.
You can feel it pull when you turn the wheels with the hubs locked running in 2 wheel drive.
Cargo Master
Joined: Mar 2006
Posts: 2,789
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From: Sand GAp, KY
Last week I ran mosy of the time in 4hi and only noticed about a .5 mpg lose as well. This surprised me becuase all the gassers I have had dropped about 1-2 mpg. I also have the limited slip front end in mine. Makes for quite a show in reverse turning the wheel side to side and mud or snow flying off of both tires lol.
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More Turbo
Joined: Dec 2003
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I was guessing maybe .5mpg diff.I filled up at the same pump both times but it was a short trip to make a milage check.It does seem to really make a difference in fuel with local driving,the thing is so heavy I guess it takes a lot to get it going if you start and stop very much.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
For a decent mileage check, you need to average several tanks of fuel.
I always fill at the same pump, sitting on the same side of the pump.
The fill spout locations on the front and rear tanks can cause a couple gallon difference in how much fuel that take unless the lot is dead level in both directions.
That usually don't happen so water drains off the lots.
I always fill at the same pump, sitting on the same side of the pump.
The fill spout locations on the front and rear tanks can cause a couple gallon difference in how much fuel that take unless the lot is dead level in both directions.
That usually don't happen so water drains off the lots.
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