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8mpg?! REALLY?

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Old Feb 23, 2010 | 10:33 PM
  #16  
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alright yep, ive started the trip and have put on about 8.5 miles and the gauge hasnt moved yet, ill check it at the end of the week prolly
 
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Old Feb 23, 2010 | 10:36 PM
  #17  
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Originally Posted by BCHauler
The "E","F", and hash marks in between have little if any reflection on what is in the tank in my experience. I always fill my tank and use the trip clock to monitor mileage. I get about 330km on the front tank and 630 on the back on average. When my rear tank shows empty I'll often still have a 100km left.
How is it that you can go almost twice as far on the rear tank? The front tank is larger.
 
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Old Feb 23, 2010 | 10:37 PM
  #18  
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Originally Posted by pete17c
I just write the current odometer reading on the back of the receipt .. it has the gallons pumped on the front .. then enter the info into a spreadsheet I set up and walla .. let's me track cost too .. and any 'trends' become obvious ..
Thats not a bad idea.
 
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Old Feb 23, 2010 | 10:38 PM
  #19  
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Originally Posted by NW 150
yea i had gave it a tune up a few thousand miles ago, cleaned the fuel injectors with the real stuff not the $3 bottles, changed the o2 sensor between the two cats about this time last year. and also iave had the 420 code come up for the cat efficiency below threshold (bank 1), so maybe one of my cats are bad or my front two o2 sensors are bad? i do realize though that when i fill up when the gauge is just above the E, i can get about 14 gallons, im pretty sure that it is a 18-19 gallon tank? so that means like i said that there is about 4-5 left on E?
You can't really access all of the gas that is in the tank, so there will likely be a couple of gallons still in there.
 
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Old Feb 23, 2010 | 11:58 PM
  #20  
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Originally Posted by '90-f150-302-5spd
After all, it was probably the worst out of all of them (maybe not the 351).
This is news to me... I got 14-15/19-20 City/Highway with my I6..... Versus 9-10/12-13 with a 351, 10-11/14-15 with a 302 respectively.
 
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Old Feb 24, 2010 | 10:39 AM
  #21  
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Originally Posted by TexasGuy001
How is it that you can go almost twice as far on the rear tank? The front tank is larger.
I installed a 32 gallon Bronco tank in the rear when the stock rear tank rusted out.
 
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Old Feb 24, 2010 | 10:55 AM
  #22  
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On my 92 super cab my front tank is 14-16 gallons and my back is 18 gallons my 94 had 2 18 gallon tanks
 
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Old Feb 24, 2010 | 11:53 AM
  #23  
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Originally Posted by BCHauler
I installed a 32 gallon Bronco tank in the rear when the stock rear tank rusted out.
Why not just use the rear tank and plug off the front? 40 some gallons of fuel just seems like over kill to me.
 
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Old Feb 24, 2010 | 12:05 PM
  #24  
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Never calculate mileage from the gauge.

My 300 with the M5OD got about 12-14 around the back roads and town, and pushed 20mpg on open highway with a slight downhill grade(heading south from here, it's downhill most of the way). Depends a lot on what gears you have, though. And remember, your 32" tires throw off your speedo, which throws off your mileage calculations.
 
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Old Feb 24, 2010 | 12:17 PM
  #25  
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Well on my truck i do about 13-15 MPG and i just get the common tune up, with new rotor, spark plug, cables, and cap for rotor, also oil change, and fuel filter, air filter, also once in awhile Lucas fuel for the gas. i thinking about replacing the Oxygen senor.
 
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Old Feb 24, 2010 | 02:31 PM
  #26  
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Originally Posted by SaikotikGunman
Never calculate mileage from the gauge.

My 300 with the M5OD got about 12-14 around the back roads and town, and pushed 20mpg on open highway with a slight downhill grade(heading south from here, it's downhill most of the way). Depends a lot on what gears you have, though. And remember, your 32" tires throw off your speedo, which throws off your mileage calculations.

yea ive found out its .3 miles behind, so when it says ive gone 12 miles, ive really gone 12.9 miles. ill see what im gettin at the end of the week, hopefully gas doesnt change like it always does, it shouldnt be over $1.75 in the first place
 
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Old Feb 24, 2010 | 04:38 PM
  #27  
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My 94 Reg cab Short bed 4x4 351/E40D with 33" tire and possibly 3.90 gears.

Im getting 8-9 mpg consistently. No matter highway, city. It sucks. Im hoping to take it on a long trip to see if i can squeez more outta it.
 
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Old Feb 24, 2010 | 04:57 PM
  #28  
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wow that sucks, thats almost as bad as a 79 with a 460 i drove! lol, sometime at the beginning of this summer ill do an electric fan swap, try and get whatever i can outa that since everyone says that they do give increases
 
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Old Feb 24, 2010 | 04:58 PM
  #29  
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Originally Posted by NW 150
yea ive found out its .3 miles behind, so when it says ive gone 12 miles, ive really gone 12.9 miles. ill see what im gettin at the end of the week, hopefully gas doesnt change like it always does, it shouldnt be over $1.75 in the first place
Indicated speedo and odometer errors are going to be exponential. It also works the other way, larger tires=slower speedo readings and lower odometer readings. The faster you're going, the more the speedo/odo is going to be off. Kinda tough to calculate mileage that way...

HOW TO RECALIBRATE THE SPEEDOMETER ON 92-96 FORD F-SERIES AND BRONCO .: Articles
 
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Old Feb 24, 2010 | 05:04 PM
  #30  
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From: Pennsylvania Wilds
Originally Posted by Bob Gervais
Indicated speedo and odometer errors are going to be exponential. It also works the other way, larger tires=slower speedo readings and lower odometer readings. The faster you're going, the more the speedo/odo is going to be off. Kinda tough to calculate mileage that way...

HOW TO RECALIBRATE THE SPEEDOMETER ON 92-96 FORD F-SERIES AND BRONCO .: Articles
What he said.
 
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