Forum Discussion
Me_Again
Jan 27, 2019Explorer III
GWolfe wrote:colliehauler wrote:valhalla360 wrote:That's the oddity of it. I also own a F-250 V-10 CCSB with a 5sp manual that's lower geared 3200 rpm at 75 compared with 2200 rpm on the 5.4 automatic. The V-10 usually gets between 13.57 to 13.75 solo same trip.
Sounds about right.
We get 14-15 with a 2008 V10 but we usually keep it to 65-70mph...that extra 5mph costs a surprising amount of fuel.
That's why the curiosity of what others got in mpg with their 5.4 solo. All milage is hand calculated.
The V10 may be running higher RPMs but isn't working as hard as the V8 at 75 mph. The extra weight of the long bed doesn't help either.
Years ago we use to look at the inches of vacuum being pulled. The higher the vacuum the lower the mileage. Gears were secondary to the issue.
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