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Fuel Milage

Discussion in '2nd Gen - 2003 - 2006' started by R W Carpenter, Jul 6, 2019.

  1. Uberexpy

    Uberexpy Member

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    My test was out of curiosity over the advantage that the cam phaser is supposed to give in fuel economy. I was on vacation and didn’t care how long it took. Of course, the folks on I-95 had other ideas. They kept gesturing that I was number 1. Now I try to plan routes that keep me below 65 mph. It might take a few minutes longer, but the rural road views are better than the Interstate scenery.
     
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  2. JohnnyB

    JohnnyB Member

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    My '04 Exp. gets almost 18 MPG on highway, even tho the 'average' reading on dash only tells me 11 MPG. Around town aint too shabby either. 5.4 w/Motorcraft syn 10w30 and K&N air filter. No other mods, except I run Seafoam in fuel about once every month & a 1/2.
     
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  3. TobyU

    TobyU Full Access Members

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    I have never seen the mileage average indicator be that far off especially not in the poor fuel economy Direction. People call them a lie o meter but I disagree with that because I find them to be pretty darn accurate.
     
  4. Blksmk

    Blksmk Full Access Members

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    07 expy xl
    225000 miles
    23.15 mpg 90 % highway at 66 mph

    Hand calculated
     
  5. Don Hall

    Don Hall Full Access Members

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    You might check for trouble codes in the hand calculator :burnout:
     
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  6. RichardH

    RichardH Full Access Members

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    '03 5.4 2 wd, 150K miles, mpg o'meter on a good day was 22.6 mpg. Always 87 gas. 80 mile round trip - fwy 99% of the time, almost full tank of gas and 120# of stuff in truck, also me @ 205#, no passengers.

    Normally between 19 - 22 mpg on fwy. Lower city of course.
     
  7. Blksmk

    Blksmk Full Access Members

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    Running 94 octane and a fresh tune up
     
  8. Jeff G

    Jeff G Member

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    Wow, great mileage. My 2003 5.4 4X4 averages 16-17 hwy 12-13 city. Tuned with recent plugs, COP'S, cleaned MAF and new driver side cat. Runs fantastic. it will hit 18 on a long, flat highway if I keep it at 65. I find the mpg calculator to be dead on.
     
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  9. RichardH

    RichardH Full Access Members

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    Yes sir, I also find the mpg o'meter pretty accurate. I think I got lucky. Same plugs when I bought my truck about a year ago - my wrench pulled a few plugs and they were almost flawless. Did do 5 new COP. Every 6 mos, new air filter and keep tire pressure at 42F, 40, R. Check those weekly.

    In jest, I try to drive these not-too-aerodynamic vehicles with a fair tailwind. And down hill - both directions. :)

    I'm Ok with gas right now, it's about $1.50/gallon at good stations. heard there are lower in other states, but my dad is paying $3.50/gallon for high octane for his Lexus in CA. Ouch...
     
  10. Blksmk

    Blksmk Full Access Members

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    I'm paying 1.12 per litre x 3.78 to equal a US gal $4.23 then add exchange rate 3.02 usd per gal.
     

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