Topic Sponsor

Gas milage 6cylinders

 
Old 05-07-2014, 12:39 AM
  #101  
Junior Member
 
Join Date: May 2014
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default Reasonable but slightly lower than expected

I bought the truck, a 2011 Screw 4x4, 3.5 L EB about 2000 miles ago; there's 73K miles on it now so it is obviously fully broken in.

My commute sucks for gas mileage: 5 miles each way; downhill when cold, 2 miles flat while it starts to warm up, and finishes with an uphill. None of which is conducive to good mileage. Even driving like my user name that results in about 14 mpg. Warmed up on longer in-town trips the mileage improves to 16-17. I finally took it on a 200 mile road trip that was 90% freeway and the computer indicated 21.4 mpg. A frigging freeway traffic jam due to a multi-vehicle wreck dropped the mpg 0.4 mpg by the time I got out of it. And of course had headwinds on the way down but no tailwind on the way up. But it is really boring with the cruise set at 60-62 but I just wanted to see if it could match Ford's number.

My overall mileage for the past 2000 miles is 16.1. Not quite what Ford said but not too far off.
More details:
No mods, plugs have been replaced and I assume correctly gapped
Had the stumble issue & the TSB done and no reported problems since.
Cats aren't throwing a code for being plugged from the miss-fire but they might not be flowing as good as they did new.
87 Octane
Low Rolling Resistance Tires about 5 psi over spec
Max Tow 3.73 Gears with the larger differential
6.5 foot bed with Leer Canopy
Lariat so a bit heavier with add'l options & running boards
Off-road package so a bit extra weight from skid plates.
Truck weighs 6000 pounds with a 1/3 tank of gas (dump scales). About right as I think a base 4x4 Screw with 6.5 foot bed is supposed to weigh around 5700 pounds.

The manual says that every 400 pounds is approximately equal to 1 mpg loss. Between the canopy, weight of the Max Tow package, larger diff, skid plates, running boards, Lariat options, spray-in bedliner, rear helper airbag springs, and my own spare tire probably equates to almost 400 pounds. Add in the dumbo-sized mirrors and the 3.73 gears I'm surprised I got the mileage that I did.

I'm going to pull off the Canopy & put on a roll-up tonneau cover, check the plug gaps, and un-bolt the extra stuff I don't need, switch over to Amsoil or Royal Purple fluids, & also see if warmer temps and summer gas help before I start playing with bolt-ons or aftermarket widgets.

But considering the power the EB puts out, the mileage is pretty darn good. My 2007 Titan Super Cab 2WD non-tow got about this and it had a tonneau cover, less power, was only 2WD, weighed less, and had taller gears. But it did have that nice V-8 rumble - I do miss that. I won't even mention the gas mileage my '86 F-250 Heavy Supercab with a 460 and the EB would probably out-pull that. It even gets the about the same mileage as my old Manly F-100 300 ci in-line 6 with a manual tranny.

Overall I'm happy with the truck.
Seattle Slow is offline  
Old 05-07-2014, 07:58 AM
  #102  
Senior Member
 
Join Date: Apr 2012
Posts: 111
Received 13 Likes on 12 Posts
Default

Originally Posted by Seattle Slow View Post
I'm going to pull off the Canopy & put on a roll-up tonneau cover, check the plug gaps, and un-bolt the extra stuff I don't need, switch over to Amsoil or Royal Purple fluids, & also see if warmer temps and summer gas help before I start playing with bolt-ons or aftermarket widgets.
I'd sure be interested in what you find taking off the cap. If it's heavy the combination of increased drag and weight could make 1-2 mpg difference but I'd love to see some numbers. I'd take mine off and see but I'm not quite that handy LOL
Fastskiguy is offline  
Old 10-09-2016, 11:53 AM
  #103  
Junior Member
 
Join Date: Oct 2016
Location: Dallas , GA
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default New to me

Just bought 2014 f150 4x4 3.7 ltr 59000 miles
Getting avg 16mpg with 37 gal tank , drive ATL traffic work week then around town weekends .
Any ideas on Good cheap mpg improvements ???
Happy now like to be happier ! Thanks
Len613 is offline  
 


Thread Tools
Search this Thread
Quick Reply: Gas milage 6cylinders


Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: