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Old January 20th, 2011, 10:27 PM
michaelsnodgrass18's Avatar
michaelsnodgrass18 michaelsnodgrass18 is offline

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Default 5.8 Gas Mileage

just out of curiosity what kind of mileage does anyone else get with the 5.8l v8?
Old January 21st, 2011, 04:11 AM
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ASwaff400 ASwaff400 is offline

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i get about 7-9 city and 10-13 highway and thats with a fairly heavy right foot...


'95 F150 XLT, reg cab long bed, swapped 351w,
4.56 gears, 4-link SAS, 14" coil overs.

SAS Thread!!!

'04 F250 Lariat, crew cab short bed 4x4 6.0L PSD, 3.73 gears, straight piped,
sinister coolant filter, welded egr, CAT EC-1 coolant, blue spring.
60 gallon fuel tank/tool box, SCT X4 w/IDP custom tunes, SOON TO BE STUDDED!!

a bunch of boats

Old January 22nd, 2011, 01:07 PM
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I have the 5.4 Triton and after learning how to accelerate the truck, I get about 13 town and close to 16 hwy. When I first bought the truck I was only getting 10-11 in town.

04 FX4 Scab 5.4

God, Guns & Guts made America Free; Let's Fight to Keep all Three

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Old February 8th, 2011, 08:07 PM
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when my truck was stock with 3.55 gears i was gettin 12 city and 15 or 16 highway... and thats with a really heavy right foot...

Old June 29th, 2011, 04:59 PM
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The Frankster The Frankster is offline

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I'm getting about 14 city but that is a lot of lights and they are timed long. I can get around 20 on the hwy driving speed limit or just 5 over and light throttle work.
Old June 30th, 2011, 01:37 AM
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17 on my last tank.

*** June 2011 ***

F150 - Gotts no silencer Intake, straight piped 2.5" exhaust

Sold the Bronco

Old August 23rd, 2011, 06:32 PM
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Default help me?

How in the world are yall getting that kind of gas milage??? I do good to get 7 mpg..I have no engine lights on so all is running good I guess..any idea on how to get the milage out of mine like you guys are getting? I have a 96 f150 4x4 ex-cab with a 5.8 in it..no oversized tires"31's"...and I have modified nothing!

Last edited by icowboyuptoo; August 23rd, 2011 at 06:34 PM. Reason: tell what Im running..
Old August 23rd, 2011, 09:27 PM
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Try checking for codes anyway, there can be stored codes even without the cel being on.
Is your truck obd1 or 2?
If it is one you can check it with just a paper clip, if it is 2 you need a reader.
http://fordfuelinjection.com/?p=13 Thats for odb1
Other than that, just replace old worn out parts. Simple things like brake drag or wheel bearings sticking can kill mileage.
Or buy a 4.9, I get consistent 15 city 20 highway
Old August 24th, 2011, 02:56 PM
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Default Russ...

thanx Russ....I got no idea if it is a 1 or a 2...everything is working good on the truck..no brake drag or anything...just bad gas milage...anyone know of any mods i can do to improve it?
Old August 24th, 2011, 07:15 PM
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What year is it? If it's anything older than 96 it's obd1 no doubt, obd2 compatible throughout certain years with an adapter of some sort. Obd1 is easier anyway.
Better mileage.. lighter right foot and like I said, test and replace old parts.
Make sure your airfilter is always clean and look at getting the intake from a 300 or 460.

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