7.3 Fuel Mileage ? - Ford Powerstroke Diesel Forum
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post #1 of 78 Old 11-17-2010, 05:56 PM Thread Starter
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Question 7.3 Fuel Mileage ?

I have a 02 7.3l crew cab 4x4 with 59k miles and I am curious about my fuel mileage. I'm using a edge evo programmer, 4" SS magnaflow turbo back exhaust and a K&N drop in air filter. I recently went to 285/75-16 tires(upgrade from 265-16),the speedo is 70mph at 70mph(gps). When I was running 265 tires the speedo was at 70mph the gps was 67mph. I average around 13.5 city and 15.5 hi-way. When I hear people talk about their mileage they seem to get a couple miles to the gallon more than I'm seeing. I'm figuring the mpg's by miles/gallons. I fuel at the same place 90% of the time and top off every time. Any ideas would help me know if I'm running normal. The truck seems to run great plenty of power.
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post #2 of 78 Old 11-17-2010, 06:05 PM
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i average about 14 miles per gallon. thats 2/3 highway actually even more highway than thati would say. thats on a 2000 f350 4wd about to hit 160k miles in a few days, and completely stock. not to mention thats with tool bins that are full, and ladders.

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post #3 of 78 Old 11-17-2010, 06:11 PM
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Sounds a bit low to me, I average 17-18 on the highway.

Zach
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post #4 of 78 Old 11-17-2010, 06:29 PM
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Quote:
Originally Posted by LoneWolfe View Post
I have a 02 7.3l crew cab 4x4 with 59k miles and I am curious about my fuel mileage. I'm using a edge evo programmer, 4" SS magnaflow turbo back exhaust and a K&N drop in air filter. I recently went to 285/75-16 tires(upgrade from 265-16),the speedo is 70mph at 70mph(gps). When I was running 265 tires the speedo was at 70mph the gps was 67mph. I average around 13.5 city and 15.5 hi-way. When I hear people talk about their mileage they seem to get a couple miles to the gallon more than I'm seeing. I'm figuring the mpg's by miles/gallons. I fuel at the same place 90% of the time and top off every time. Any ideas would help me know if I'm running normal. The truck seems to run great plenty of power.
same boat buddy bump

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post #5 of 78 Old 11-17-2010, 06:31 PM
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Originally Posted by Zaairman View Post
Sounds a bit low to me, I average 17-18 on the highway.
mine is probably loaded with at least a thousand pounds though i would bet.

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post #6 of 78 Old 11-17-2010, 07:26 PM
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It all depends on speed... At 70 you will suck the fuel down... At 55 I can get
20MPG.. ( I never go 55)

Will also depend on your right foot and that programmer.

So when you say milage you need to state your speeds for hwy and your foot
tendency...

With a light foot and 65 hwy speeds you will probably see 14 city and 17-18 hwy. MPG
at 70 is MUCH lower than 65. 65 is the max you want to go for decent milage.

Also, ditch that drop in K&N. They have a tendency to dust engines.

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post #7 of 78 Old 11-17-2010, 07:50 PM
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02 with 59k? !!! Holy He double hockey stick. Doesn't matter what mpg you get thats awesome. Mine has 172 k until my 4,000mile trek to az an back

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post #8 of 78 Old 11-17-2010, 08:00 PM
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I think your good. Most people lie about there actual mileage anyways. I never get over 18 and average more like 15. If you had a stick then you would get better
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post #9 of 78 Old 11-17-2010, 08:45 PM
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Well that little mileage thing in all my trucks has always read 14.1mpg no matter what.
But tracking it the old way with pen and paper, running 70-75 in summer (#2 fuel) cruse on I get:

95 F350 E4OD 4spd auto 265/70R16s gets 17mpg
98 F250 5spd standard 285/70R16s gets 18mpg
02 Ex that was wrecked with the “experimental” 5spd auto 285/70R16s got 23+mpg
01 Ex we just got with 4R100 4spd auto 305/70R16s gets 18-19 on #1 fuel best as I can tell after 2 tanks.

I usually loose 2 or 3 mpg in winter because of the #1 fuel and idling time but man I miss that 5spd auto already!

ANDY

My baby is a one of a kind.
1977 I bought a new 76 F150 club cab.
Sitting on a 84 F350 6.9 4X4 chassis
With all the drive train and goodies from a 95 4X4 4door PSD.
Nothing stock left on her and not a nut, bolt, hose, or wire on there that I didn't put where it is.

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2002 Excursion Limited 7.3 PSD

Themo King/Mikuni coolant heaters on both to keep things toasty without idling.
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post #10 of 78 Old 11-17-2010, 08:57 PM
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my 02 will get 20+ hwy at 65-70 but im lighter then a cclb 4x4...by far. haha.
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