05 scab lariart 2wd 3.55 fiberglass tonneau summit dual exhaust 21/4" k&n drop in
16.2mpg city/hwy 80mph average hwy speed.
Had a 04 screw fx4 3.73 13.8 mpg same set up.

 

Thanks for all the input guys.

I would hope a 2WD that is driven conservatively would be able to get 18 HWY.

Bridge, I'm very interested to see if/when you get that fan kit. I'd love to see the data after a few tanks using the E-fans. A good way to really prove the effect, on a local level for you and I.

CMOS

 

I have an 04 supercab 4.6 2x4 and get 16-17 thats not driving it hard pulled a 4 horse trailer with 1 horse in it on the interstate and got 12.

 

Ok since 4.6L is brought up. We just completed a 1400 mile trip to Western New York State in our 04 F150 Screw XLT 2wd 4.6L...loaded with 2 adults and 2 kids plus luggage, cruising at 74 ish mph...best 2 tanks were 19.6 mpg and 20.3 mpg....running on 87 octane with an SCT custom tune..

ps truck has over 100k miles on it...ie its not new

 

That's much better than I thought you'd get with the 4.6.


CMOS

 

thats much better than I do get with a 4.6

 

I have an 04 2wd screw with 3.55 gears, I get about 19 highway going back and forth to work all week, I have a 35 mile one way trip, about 33-34 of those miles are on the highway. When I am pulling my popup I get about 13-14mpg highway. I have an '06 starcraft 2409. 3000 lbs loaded, 18' long closed 3 people and 2 dogs.

 

I have an '06 F150 Lariat 4x4 SCAB with 5.4/3.73 and 27,000 miles. While the weather was still warm, I was getting 21hwy/18.2city (19.6 avg.). Now that it's gotten cold here in Ohio I'm averaging 17.2mpg.

Dale

 

Here are some of the other tanks. The best tank of 20.3 was on I77 from North of Statesville NC to Columbia SC. Maybe its all down hill from Stateville who knows

miles gallons mpg
221.4 12.466 17.76
250.2 12.746 19.63
229.2 13.723 16.70
228.1 13.292 17.16
223.3 10.988 20.32
215.4 13.484 15.97 tank had some city miles on it..

 

I thought the originator of this thread ask for realistic numbers. Apparently there is something wrong with my truck or my calculator. The best I can do is 14 around town and 18 on highway. This is driving very conservatively. I would kill for some of the numbers I am seeing in this thread. I know the long box adds some weight and the 3.55 hurts some with in town stop and go but +20 mpg I will never see regardless of mods.

My Truck:
2 wheel drive Lariat
6.5' box
3.55 Gears
Dual Exhaust

 

I have had 3 ford trucks in the past 10 years, I kept track of all of the mileage on all 3 of them, every gallon, every mile, loaded, unloaded, winter, summer, etc. went into an Excel spreadsheet. I didn't throw out pulling heavy trailers or tail winds running light on the Interstate...these numbers are honest long term averages.

I drive in Central IL where it's flat in a mix of about 60/40 highway/city driving.

1997 F-150 Super Cab, 4x2, 4.6L, 3.55LS, 6' open box.
Total miles when traded 126,000
Mileage recorded over 70,588 miles
High = 18.38
Low = 11.49 (5000# trailer in tow, OD off)
Average over total miles = 15.91 MPG


2004 F-150 SuperCrew, 4x2, 5.4L, Edge on level 2 and 89 octane (10% ethanol), 3.55LS, 5.5' box with Access cover.

Total miles when some idiot T-boned me 34,456
Mileage recorded over 19,363 miles
High = 18.52
Low = 12.32 (5000# trailer in tow, OD off)
Average over total miles = 16.36 MPG


2006 F-150 SuperCrew, 4x2, 5.4L (E85 version), Edge on level 2 and 89 octane (10% ethanol), 3.55LS, 5.5' box with Access cover.

Total miles to date: 25,585
Mileage recorded over 25,585 miles
High = 18.45
Low = 8.87 (7500# travel trailer in tow, OD off)
Average over total miles = 15.56 MPG

 

I just got a Harley with the Saleen motor and have been seeing 14.0 around town. That is on the computer average. Is the computer fairly accurate? I only have 200 miles on the truck.

 

Yes, very accurate. As long as you reset it every time you fill up.