my new ecoboost
09-26-2012, 08:46 PM
#11
One Bad MoFoMoCo Owner
Nice truck! Looks good!
I'm in the same boat! 12-13mpg on average lately. Speedometer is spot-on with my 33" Toyo MT's and 3.73's.
I know you all think it's funny, cause all you guys are used to GASOLINE engines.
I came from two Dodge Cummins diesels in a row which still returned 18mpg highway, 15 city regularly with 35" Toyo MT's and 3.73's.
I was sold on the Ecoboost hype until I had one. I thought it would be more efficient than a V-8. Looking back I'd get a 5.0. I don't see a benefit to a boosted gas V-6. I think a 5.0 would get better mileage because it has to work less to maintain the same speed (say 70mph) compared to a boosted six.
I'm in the same boat! 12-13mpg on average lately. Speedometer is spot-on with my 33" Toyo MT's and 3.73's.
I know you all think it's funny, cause all you guys are used to GASOLINE engines.
I came from two Dodge Cummins diesels in a row which still returned 18mpg highway, 15 city regularly with 35" Toyo MT's and 3.73's.
I was sold on the Ecoboost hype until I had one. I thought it would be more efficient than a V-8. Looking back I'd get a 5.0. I don't see a benefit to a boosted gas V-6. I think a 5.0 would get better mileage because it has to work less to maintain the same speed (say 70mph) compared to a boosted six.
My 2012 XLT 5.0L 4x4 SCrew gets around 18 to 22 mpg on the hwy now that she broken in, depending on wind speeds, wind direction and whether I am driving into or out of the hills. Into the wind, into the hills is lowest, out of them with a tailwind is best. I get a little over 17 on the commute back and forth to work.
A guy at work has a 2" level and 35" Duratracs on stock 17" wheels on a 2011 XLT 5.0L SCrew 4x4 (the same setup I plan to do), and gets 17 to 18 MPGs on the higway and 16 commuting.
Seems the ECO would do better, but I have heard alot of people say they don't get the mileage tehy were hoping for.
09-27-2012, 07:08 AM
#12
Senior Member
09-28-2012, 05:32 AM
#16
Originally Posted by NorCal-09
First, handsome truck!! 
Also, that background scenery could pass for many areas of California!
As to the MPG; I learned with the addition of larger, heavier, tires (35" Toyos) it was a trade-off between the look I liked and the optimum MPG.
Also, some of it could be due to calibration of the odometer with the larger rubber; but the weight alone will rob you of a few MPG.
And then, with the EB, most likely you have the tendency to dip into the boost; which would make a significant MPG difference too?
Also, that background scenery could pass for many areas of California!
As to the MPG; I learned with the addition of larger, heavier, tires (35" Toyos) it was a trade-off between the look I liked and the optimum MPG.
Also, some of it could be due to calibration of the odometer with the larger rubber; but the weight alone will rob you of a few MPG.
And then, with the EB, most likely you have the tendency to dip into the boost; which would make a significant MPG difference too?
The rich start to get the cats lit doesnt get amortized over the trip when they are all short for one.
09-28-2012, 08:24 AM
#17
Senior Member
Short trips, stop and go driving and a heavy foot really hurt fuel mileage in an EcoBoost.
My 2012 6.5 bed screw with 3.5 rear end got up to 19.3 lifetime mileage when I was making long trips. Now that I am staying home and mostly short trips it has dropped to 19.1 lifetime. I drive for mileage and still make one long trip a week that I average 19.5 to 20 mpg but on short trips it only does 16.5.
My 2012 6.5 bed screw with 3.5 rear end got up to 19.3 lifetime mileage when I was making long trips. Now that I am staying home and mostly short trips it has dropped to 19.1 lifetime. I drive for mileage and still make one long trip a week that I average 19.5 to 20 mpg but on short trips it only does 16.5.
09-28-2012, 09:35 AM
#18
Senior Member
Originally Posted by mastiff23
a couple pics of my new 6.5 fx4 with added accessories,2.5 level,add a leaf,fuel wheels on bfg's.5000 miles now and overall not a bad truck other than my great ecoboost engine gives me a nice 13.5 mpg!dealer says ford won't pay them to look into mileage issues under warranty.any suggestions?
09-28-2012, 10:42 AM
#19
I have had mine now for almost 1000 miles and lifetime I'm getting 16.8 right out of the box with my EcoBoost! It's all in your driving. I have never seen my average below 16.2 mpg and its only starting to continually creep up as I drive!
09-28-2012, 04:31 PM
#20
Senior Member
i am at 900 miles and and at 17.2 life time but is says i am getting 18 instant in my 5.0 what rear end do you got?