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3.7 gas milage with 3.55

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Old 07-19-2011, 05:47 AM
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I have a 3.7 v6 supercab w/3.73. I get 22 mpg highway but in town I only get 12-13 mpg. Truck sucks gas around town.
Old 07-19-2011, 08:34 AM
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So other than the initial sticker shock of the ecoboost, the mpg isn't much different than the 3.7. Kind of interesting.
Old 07-19-2011, 04:54 PM
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Originally Posted by oldphart
an Escape..... a 2010 ! loved the thing except it was just too small for my big frame!.... I had the V-6 and got around 24 MPG in basically rural Florida driving while I did get closer to 26-28 on the hiway....... no two ways about it tho.... the F-150 is pure comfort!
Same here. I traded in a 2010 v6.

Good for 28-30 on a good highway run.

And the are a little pocket rocket too

Alas, my 6'3" @ 350 just could not take it any more.
Old 07-20-2011, 12:07 AM
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My dad just made a run from MA out here to NY, 3.7L V-6 Scab, 3.55 gears.

24.4 MPG on the way out, and a shade over 25 MPG on the way back home.

Not too shabby.
Old 09-30-2011, 10:20 PM
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i thought once you go scab all tha t is available is 373.355 only reg cab
Old 12-09-2012, 06:03 AM
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3.7 , 4x4, long box: 13mpg ,mostly city.

i only have about 250 miles it so far so take that into consideration along with my number.
Old 01-27-2013, 10:36 AM
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I've been at about 20mpg for 8,000 miles on my 2012 3.7L super cab 2 wd and it's taken everything I can do to get it there. I have a cab height topper and it seemed to drop the mileage a bit. It is...really not good in the cold LOL. I think the weight of the topper makes a big difference in mileage. It's a rare day for me to get the epa 23mpg on the highway at 60-65mph.

Still....20mpg in a full size, capable truck? That's pretty amazing

http://www.cleanmpg.com/index.php?pa...ser=Fastskiguy
Old 01-27-2013, 11:20 AM
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On one 30 mile stretch of highway I set the cruise at 60 with the AC off and by the time I got off the highway the computer was at 25.5 and still climbing.

I wish I had the patience to drive at 60 mph on long trips but aint nobody got time fo dat! I average probably 21-22 mpg if I go 75-80

This is in a 2wd 3.7 Scab with 3.73 rearend
Old 01-27-2013, 02:15 PM
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Originally Posted by oldphart
now approaching 10,000 miles on it with a lot of recent miles running I-95 ........ have the 3.7 with the 3.73 rear and its a Screw..... ( candy apple red!) ... am averaging about 19-19.5 around town.... basically rural west coast Florida 65 miles north of Tampa . Am not unhappy about performance there ....... but little increase in MPG on the hiway. I can see where driving at a steady 62-65 and keeping the tach under the 2,000 mark will deliver close to ... BUT NOT THE REPORTED .... 23 MPG ........ and driving at 70-74 MPH needs a tach showing over 2,000 RPM.... and the MPG drops off there........ HOWEVER....... when i do use a midgrade gas, it usually shows an improvement of about 1-2 MPG ........ I believe that the amount of actual ethanol in the gas will affect the MPG and that there are various amounts diluting the regular ( 87 octane) fuel I usually get. I know in Ohio a load of Sunoco 87 octane delivered just over 15 MPG while fuel loaded on in North Carolina, also 87 octane delivered close to 21.4 with basically the same type of Interstate driving in simialr weather conditions.

Opinion here is that unless you have some way to measure the actual dilution of ethanol ( UGH! Hate the stuff!) in each load of fuel, you will never get "real" MPG numbers to compare. My hate for ethanol is a result of realizing that the manufacture of this additive is more energy intensive than the results it delivers as well as lowering the life expectancy of your engines........ it's a bit like the Administration trying to get us to use electric cars because they are so "easy" on our energy.... all we need to do is plug them in overnight ....... and they seem to forget that while they are all plugged in, some power plant somewhere is burning coal, natural gas, atomic energy, or ???? to produce that power that recharges the batteries........ C'mon.... where is the common sense in this argument?
Oldphart, and I had (I just traded) basically the same truck. I got the same milage on the highway, but not as much in town. A 3.7L w/3.55 in a Reg. Cab which is lighter should get you better mileage. BTW, they do have quite a long break-in period. I didn't start the better mpg's until it reached approx. 3000 miles.

Oldphart, you hit the nail on the head with the mileage on North Carolina gas. I live in NC, and 21.4 - 21.5 was the mpg's running 1900 - 2000 rpm's.

Last edited by Wanted33; 01-27-2013 at 02:18 PM.
Old 01-28-2013, 07:50 AM
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until i read your comment, i had no idea that there was the option to get a 3.55 for the 3.7... i have yet to see one for sale myself.


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