Mike, on a good week, I get about 14mpg around town, highway crusing 75 I tend to get about 15 or 16. I have the 4.6, 5 speed, 3.55, shortbed, extended cab, 4x4 off road. I do have a flowmaster as well as the airbox mods, a k&n, bosch +4's, and I do run 93 octane. If I don't, I get lots of pinging. I used to get mid 12's around town before using 93. It really did make that much difference since I had so much pinging. I didn't see a difference really at all with the +4's. In fact, non of my mods did me any better on the mpg's except for the 93 octane. I go to school in pittsburgh pa, so I guess we get ok gas here? I normally get it at BP. Hope this helps!

Mike

------------------
97 Bright Red, S/C, Off Road XLT, 4.6, 5speed, 3.55 LS.
Lighted Sunvisor, Bug shield, Nerf Bars, Mud Flaps,
Leer Signature Series Cap (for winter), Flowmaster 40 series,
Airbox mods, K&N, Bosch +4's, Complete Eclipse Stereo System.

 

4x2, 5.4, Reg Cab, Short Bed, Stock
Empty weight 3878 (according to the registration)
Purchased for Virgina
Running on CITGO (87)

17.4 mpg (2/3 highway driving at 65 mph avg, my daily commute)

19.5 mpg (all highway average 65 mph)

14.2 mpg (towing 3500 lbs, average 60 mph)




------------------
99 Lariat R/C 2WD 120"WB 5.4 3.55LS Tow Dark Toreador/Gold Line-X
raoul_oba@hotmail.com (Virginia)

 

I get around 15.5 to 15.7 on the highway (78mph average). I get around 12.1 to 13.8 in the city.

Texaco Gas 91 Octane.

------------------
~
1999 Ford F150 XLT 4x4
Off Road Package
Tow Package
5.4L Automatic
Supercab
Electric 4x4 switch
Full bench interior
Factory running boards
Mods : superchip, gibson
swept-back exhaust, k&n
FIPK. Bug deflector.
Use : Mobil1 5w30 and
k&n oil filter.


[This message has been edited by kmonton99 (edited 10-12-1999).]

 

I track my mileage almost every tank and it is usually 15.5 to 15.8 mpg for my 4.2L V-6, 2wd Supercab XLT w/ auto trans and 3.55 gears. Best I ever got was 16.2 (all highway) and worst was about 14.5. My usual driving is mixed 75% highway/25% city, with highway at 70 to 75 mph. Truck is a California model and I have been disappointed with the mileage since day 1. I run 87 octane fuel. Ran 3 tanks of 91 octane (the highest available out here) and saw no improvement in mileage.

Usual gas is Shell or Chevron. In the Bay Area, we have had the 'improved' fuel with MTBE for some time now.

I'm jealous of some of the figures posted by the 5.4 and 4.6 liters. Wish I got mileage that good!

------------------
1999 XLT S/C, 4.2 V-6, auto, 3.55 rear, dark torreador red/harvest gold, bed liner, Sony 10 disc CD, Edelbrock IAS, K&N filter, soon to Superchip


[This message has been edited by dirt bike dave (edited 10-12-1999).]

[This message has been edited by dirt bike dave (edited 10-12-1999).]

 

Most of my driving is highway, with the occasional wide-open-throttle demonstration of speed. I get consistant returns of 18-19mpg running Arco Premium. The truck weighs 4900 pounds with me and a half tank of gas. Truck was originally sold in Washington State and is still there.

Details of the truck are below:

------------------
1998 F150 XLT S/C 4.6L Auto, 3.55LS, 4X2, Moonlight Blue, all the bells & whistles except for leather seats. Lund Deflector, K&N, Pentaliner S/R, Window tint, factory side-steps, Infiniti component speakers, Superchip. Tom in Tacoma (Washington not Toyota)

 

15 or 16 city and 19-20 highway.

 

These are *exactly* the kinds of posts everyone needs, nice job everyone!

We need to accumulate as many responses as possible, and then we will summarize the data for everyone, so they can compare. The more details you can give everyone in your posts, the better, so thanks to everyone for mentioning your gasoline brands, weights, what type of driving you do, etc., and thanks in advance for all the future responses.

This is excellent data that will help everyone to get fair and directly comparable data for like vehicles in like areas.

Bring on the data!

------------------
Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com

 

I get 13.5 to 14.5 on normal driving 60% city 40% highway. On Interstate trips I get 15 to 15.5. I used 87 octane from Mobile or Marathon. I tried 89 octane for 3 tanks and saw no noticeble improvements.
99 4x4 s/c 5.4 3.73 gears Cat-back exhaust

 

On a recent vacation trip I averaged an honest 18.4 and 18.9 on mostly interstates @ 65 mph covering about 600 miles total with some local driving. Best I ever got. Since I am a low yearly mileage driver (7,000 miles per year)under difficult short run, stop and go driving my normal mileage around my local area is 13 - 14 mpg.

I use mostly Texaco or Citgo gasoline. I feel with longer sustained interstate highway driving I could attain a little better than 19 mpg. There is not much I can do about my local short run driving.

Incidentally, my truck attains exactly what is estimated on Ford's MSRP window sticker.

Vehicle details in my signature.

------------------
Dunbarton "The Middle Aged Kid" '99 XLT SC SB 4x2 4.6 auto 3.55 ls The occasional Z-71 Eater! Wedgewood & Denim, SuperChipped, Airaid FIPK, Rhino Liner, Mobil 1. Man, I got it all! (New Jersey)

 

1999 4X2,short bed, SC 4.6, auto, 3.55, weight ??, 2800 miles on odometer.
Regular unleaded 87 octane
The last three tanks 18.8, 19.2, 19.3. I drive 75% Main roads (60 mph) and 25% city.
With A/C running ~17-18 mpg.
Purchased in Columbia, SC

------------------
99 XLT SC, 4.6 L,MacNeil Window Deflectors, Ford-Duraliner Bedliner, K&N Filter, Westin Nerfs.
Family Hauler


[This message has been edited by OrangeburgFord (edited 10-12-1999).]

[This message has been edited by OrangeburgFord (edited 10-12-1999).]

[This message has been edited by OrangeburgFord (edited 10-12-1999).]

 

1997 4x4, 4.2 v6, 5 spd, k&n air filter, 20,000 mi. using amoco 87 octane i usually average 15.4 mpg. best was 16.1 worst was 15.1. milage stays the same whether on the highway or in town. also the way i drive doesn't seem to matter.

------------------
'97 f150 rc, flair side,4x4,v6,5 spd, k&n air filter

 

>>>>As I posted in the other thread, I average 14.6 mpg on my daily driving round town, which is what my baby does the most. Recently checked mileage on vacation trip down to Florida from Virginia and got a very satisfying 17.6 mpg. Truck is 4.6 SC 4x4 five speed with the P255 16 inch tires and a 3.55 rear ratio. Opps nearly forgot, I use Exxon or Texaco 87 octane on my daily driving and 93 octane on my road trip.

------------------
99 F150 XLT SC 4x4 4.6 liter Deep Wedgewood Blue

Westin Nerf Bars

Lund Bug Deflector

Kenwood 10 disc CD changer

Bodyguard Bed Liner



[This message has been edited by JPF1715 (edited 10-12-1999).]

 

1998 XLT 4x2 4.2L extended cab
auto tranny with 3.08 gear

-City, 18 Mpg Avg.
-Hi-way, 22 Mpg Avg.
-Fuel, Shell 89 octane.
-Hard tonneau cover, K&N air/filter
-Mobil 1 Tri-Synthetic 5w30.
-90% of all driving is done on flat open roads, minimal traffic.

 

I drive 90% city 10% highway my truck has 2400 miles on it and i get 13.3 to 14.2. Might get better with more brake in. Thats with gas from wawa. Will be taking a trip to the beach soon all highway will let you know about milage aferward. I do have some what of a heavy foot.

------------------


99 F150 XLT 4X4 s/c orp 5.4 automatic 3:73
Ford soft tonneau cover rubber maid bed mat and mud from the dirt bike

 

15-16 mpg in city (Dallas metro area driving..where you either drive 80 or you're at a dead stop in heavy traffic; using 93 octane Texaco fuel

------------------
1998 Fire Engine Red F150 Flareside Extended Cab with Snuglid 4.6L with Superchip, Airaid, Dual Flo-Pro exhaust system, etc.




[This message has been edited by Belvadere (edited 10-12-1999).]