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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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  #1  
Old 10-13-2004, 06:36 AM
RacHunter RacHunter is offline
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Question Gas Milage on '04 F-150 5.4L???

I have my eye on a '04 F-150 the only thing holding me back is gas mileage. I hear so many different stories that I dont know which on to believe.
The truck I'm looking at has the 5.4L with automatic tranny and 3.73 rear end 4x4 and its a supercab.
If you have this set-up on your truck pleas post actual gas mileage you are getting.
Please do not give me the computer readings.
The only accurate way to determine gas mileage is to always fill the truck up to the same level then at next fill up divide the number of miles driven by the actual gallons of gasit takes to fill tank back up to the same level.

I know there are other post on this but so many people list the computer reading instead of taking the time to figure the exact mileage.

Thanks for any imput you guys have.
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  #2  
Old 10-13-2004, 06:37 AM
roboots21 roboots21 is offline
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Depending on how much driving on highway and in the city I do, I have been averaging between 14.5 and 15.5, and had 16 once, but have not done a full tank on the highway. I have the same setup as you.
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  #3  
Old 10-13-2004, 08:00 AM
theisen_4 theisen_4 is offline
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I have a SCrew, 5.4L, 3.73 LS, 4x2. At my last fillup, I was at 14.3 mpg. This is mainly bumper-to-bumper, city driving. When I started work much earlier (before traffic would build), I was averaging around 16 mpg.
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  #4  
Old 10-13-2004, 08:21 AM
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dcordle dcordle is offline
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Mine is an screw, 5.4L, 3.73, 4x4 and I drive highway 90% of the time. For the past 5 months on almost every tank I've been getting 17 to 18 mpg. But only 10 to 11 when towing.
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  #5  
Old 10-13-2004, 08:22 AM
SHANE_2 SHANE_2 is offline
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I have an FX4 screw, Which is 5.4L 3:73 LS, I have checked 2 tanks. Very first one being mostly highway I got 14.8. Last tank was mixed but more in town driving and it was 12.97. I have also added a Banks cat-back and now like to listen to it, So I know that contributes to a lower MPG.....lol. Also I now only have 1458 miles on it, So it should get a little better as well.


Shane
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  #6  
Old 10-13-2004, 08:31 AM
YOMAN YOMAN is offline
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04 FX4 Screw 373LS:

First long trip from dealer Jeff clark to my home approx 360 miles distance..it was about 17.3 MPG with little less than 1/4 gas left and gas gauge read at 372 mileage- NOT BAD ??

Town/HWY mixed approx 15-16 MPG.

YOMAN!
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  #7  
Old 10-13-2004, 10:09 AM
Col. Gilliam Col. Gilliam is offline
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Howdy,


I have an FX-4 Super Cab, 5.5 ft bed, F-150 2004, 3.73 diff, 5.4 L Triton V8. I check the milelage every tank.

Before the first oil change (1,000 miles) I was getting around 17 mpg on hwy (long trips).

After the first oil change, it droped to 15 to 16 mpg hwy (long trips). It has never been above 16 mpg since. I drive between 65 and 70 mph on the hwy.

A mix of hwy and town driving comes in at about 14.5 mpg which is 90% of my driving. I drive conservatively, easy on the throttle and no hard accelerations. I used to drive a Toyota 4X4 with a 2.4 L 4-cylinder (22 mpg) so this truck feels like I'm going to burn the tires off if I push the accelerator a little too much.

I am still confused why it got higher mileage before the first oil change. The only thing I can think happened was the Ford Salesman said the trucks come with thinner oil from the factory and thats why it needed to be changed at 1,000 miles. Since Ford calls out 5W20 standard, I can't figure out what oil was in it when it came from the factory or if the Salesman was just telling me a line??? Thinner oil would make it easier for the engine to turn, less work, higher mpg?

I installed a ARE LSII bed cover 3-tanks ago. The mileage has improved about 1 mpg.
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  #8  
Old 10-13-2004, 10:54 AM
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TRITON-ic TRITON-ic is offline
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4x4 Lariat supercrew 5.4, and 373 ls rear end. Taken from my latest gas receipts;

11.53mpg / 11.47mpg / 12.18 mpg / 14.10mph.

The 11-12 figures are city, and 14.10 was 75% hwy. Dealer says there is nothing wrong with my mileage. The computer shows 16c and 20 hwy. I'm going back and asking them to look at my fuel economy, and fix that junk computer they love so much.
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  #9  
Old 10-13-2004, 11:00 AM
kmurphy3251 kmurphy3251 is offline
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2004 Screw 2x4 Lariat


Mixed Driving runs between 14.5 and 15.7 depending on how hard I drive. Pure highway if I stay below 80 runs 18 to 18.5.
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  #10  
Old 10-13-2004, 11:33 AM
kamikaze2b kamikaze2b is offline
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I only have 350 miles on my 5.4 4x4 Supercrew, but I'm averaging 13.3mpg. That's about 80% city driving. If I wanted great milage I would have purchaed a Prius!
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  #11  
Old 10-13-2004, 11:49 AM
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DavidHobley OurWorldUS davehobley
SCrew, 5.4L, 3.73 LS, 4x2 MPG

I have a SCrew, 5.4L, 3.73 LS, 4x2

We have only 1250 miles on it now.

Around town non traffic driving we were only getting up to 11MPG Max, we took our first road trip the other day to Apple Hill, around 100 miles each way and now the MPG gauge was stuck on twelve, the other day my wife drove on the highway for about ten miles and it rose to 12.1 and that is where it has stayed for the last 100 miles of around town non traffic driving.

I pray it gets better. Especially with gas prices in Cali.

Any inputs would be appreciated.

Dave
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  #12  
Old 10-13-2004, 11:58 AM
kamikaze2b kamikaze2b is offline
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Well I don't know just how accurate the "computer" is. I'd just calculate it the old fashioned way to be sure. But seriously, you bought a huge truck with a giant V-8 engine, what did you expect?
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  #13  
Old 10-13-2004, 12:20 PM
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Quote:
Originally Posted by kamikaze2b
I only have 350 miles on my 5.4 4x4 Supercrew, but I'm averaging 13.3mpg. That's about 80% city driving. If I wanted great milage I would have purchaed a Prius!
True. I did not expect honda accord numbers, but I did expect something close to their claimed ratings. Big or small vehicle the fuel rating is a factor in choosing any vehicle. Do as you wish, but I'd have your truck checked for maximum fuel economy after the brake in period. If the engine is capable of it, why accept a compromise?
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  #14  
Old 10-13-2004, 12:28 PM
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TRITON-ic TRITON-ic is offline
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Quote:
Originally Posted by kamikaze2b
Well I don't know just how accurate the "computer" is. I'd just calculate it the old fashioned way to be sure. But seriously, you bought a huge truck with a giant V-8 engine, what did you expect?
If you read my post It says that the mechanics are too fond of the on board computer. I just got back with a Taurus loaner after leaving the truck behind with gas receipts which are calculated the "old fashioned way".

re. "what did you expect?"

a Just what I paid for. That's what was expected. Like I said, if it's capable of it why not maximize the engines performance.

I don't mean to tarnish your happy-bubbly new car pride. I'll let you know when I too become a member of the good mileage club. There seems to be a mix of folks that either do good, or do as I which is well below the ratings. See you at the pump!
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  #15  
Old 10-13-2004, 12:36 PM
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ITDave ITDave is offline
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DavidHobley OurWorldUS davehobley
I am not complaining about getting bad mileage!

Quote:
Originally Posted by kamikaze2b
Well I don't know just how accurate the "computer" is. I'd just calculate it the old fashioned way to be sure. But seriously, you bought a huge truck with a giant V-8 engine, what did you expect?
I am not complaining about getting bad mileage, I am asking why I am getting worse mileage than everyone else with the same truck.

Thanks,

Dave
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