Question about MPG - Diesel Forum - TheDieselStop.com
6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

 
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post #1 of 11 (permalink) Old 02-03-2019, 09:37 PM Thread Starter
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Question about MPG

I have a 06 king I have 2 tuners I run both of them an SCT and a PPE they said you can't run 2 but I do. Now my question is I run some things off my SCT tuner now my PPE has like 10 tunes from mild to wild I do my mpg by hand being the on on the truck isn't real close I do a lot of hwy driving 60 to 70 I avg about 17 to 19 mpg when I'm running faster it can get as high as 20 to 22 but running that fast all the time is impossible I shouldn't have to drive 80 to 90 to get this mpg think of changing the gears to get the engine speed up to where it is at 80 and 90 to something for the same going 70 or 80 any thoughts if this would work at 70 I'm a little over 2100 so not sure about gearing yet about 2700 at 90mph
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post #2 of 11 (permalink) Old 02-04-2019, 02:37 AM
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Don't know what to tell ya, But I have never heard of a truck betting 5 mpg better when driving 20 mph faster. I would sharpen the pencil and see if that helps.
DENNY

Early 1999 F350 AUTO 4x4 CC LB DRW 4.10 6.0 trans cooler, Front hitch, 2,000 hubs/ brakes, Bilstein shocks/steering stabilizer, Diesel site coolant filter 203 thermostat, EBV delete, new O-rings, new Oil cooler, RIFF RAFF FRX, Glow plug led, Pillar gauges, Lighted cupholder, Painless wiring fuze block, Harpoon/hutch mods, Removed axle blocks. Air bags, 5 wheel hitch, In bed 7 pin plug. Spare tire key delete. KLHANSEN on speed dial. 75,000 as of May 2019
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post #3 of 11 (permalink) Old 02-05-2019, 04:29 AM
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17-19 mpg @ 60-70 mph seems reasonable empty but typically over 2000-rpms and mileage starts to drop.


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #4 of 11 (permalink) Old 02-05-2019, 08:08 AM
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I agree that your math is suspect. If you can get 17 or 18 miles to a US gallon then I'd say thanks to the mileage gods and move on. I'm lucky if I see 16 miles to the Imperial gallon and its 25% bigger than a US gallon. As far as getting better mileage at higher speeds - get a new calculator.

2006 F250 6.0 4x4
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post #5 of 11 (permalink) Old 02-06-2019, 12:43 PM
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Quote:
Originally Posted by Bluebyyou411 View Post
I have a 06 king I have 2 tuners I run both of them an SCT and a PPE they said you can't run 2 but I do. Now my question is I run some things off my SCT tuner now my PPE has like 10 tunes from mild to wild I do my mpg by hand being the on on the truck isn't real close I do a lot of hwy driving 60 to 70 I avg about 17 to 19 mpg when I'm running faster it can get as high as 20 to 22 but running that fast all the time is impossible I shouldn't have to drive 80 to 90 to get this mpg think of changing the gears to get the engine speed up to where it is at 80 and 90 to something for the same going 70 or 80 any thoughts if this would work at 70 I'm a little over 2100 so not sure about gearing yet about 2700 at 90mph

Are you hand calculating the MPG based off of fuel used vs. actual miles driven? Or are you just looking at the dash display readout?

2005 F250 6.0 PSD, ARP Studs, Felpro HG's, EGR Delete, IPR Coolant Filter, Bilstein 5100s, Blue Spring Mod, IDP Custom Tunes
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post #6 of 11 (permalink) Old 02-07-2019, 09:47 AM Thread Starter
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If you knew me you wouldnt question my math skills really I done and redone the numbers many diff times, over a period of a year. The math is good and no I don't go by what the dash says it's a computer it tells you only what its programmed to.
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post #7 of 11 (permalink) Old 02-07-2019, 04:47 PM
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Quote:
Originally Posted by Bluebyyou411 View Post
If you knew me you wouldnt question my math skills really I done and redone the numbers many diff times, over a period of a year. The math is good and no I don't go by what the dash says it's a computer it tells you only what its programmed to.


In that case, figure out the reason your mileage inproves at high RPM and patent it.

Every PSD owner on the planet will want to buy the technology.

I am first in line. 😉


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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post #8 of 11 (permalink) Old 02-07-2019, 10:49 PM
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If you want to increase engine RPM turn off the overdrive that should give you about 300 rpm increase. Let us know if that helps.
DENNY

Early 1999 F350 AUTO 4x4 CC LB DRW 4.10 6.0 trans cooler, Front hitch, 2,000 hubs/ brakes, Bilstein shocks/steering stabilizer, Diesel site coolant filter 203 thermostat, EBV delete, new O-rings, new Oil cooler, RIFF RAFF FRX, Glow plug led, Pillar gauges, Lighted cupholder, Painless wiring fuze block, Harpoon/hutch mods, Removed axle blocks. Air bags, 5 wheel hitch, In bed 7 pin plug. Spare tire key delete. KLHANSEN on speed dial. 75,000 as of May 2019
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post #9 of 11 (permalink) Old 02-12-2019, 08:47 AM
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I've owned this truck since May '05 and do a yearly calculation based on miles driven and gallons pumped during the calendar year and never got above 16MPG. My first F250 diesel was purchased in 1998 and ever since then I have had guys with the exact same truck tell me they get 22MPG.

6.0L, F-250 XLT, Torqueshift, S/C, L/B, FX4, 3.73

Truck Build Date: 02/05/05 Kentucky
Engine Build Date: 02/03/05 Indianapolis

Gone but not forgotten - '99 7.3L F-250 XLT S/C, L/B
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post #10 of 11 (permalink) Old 02-20-2019, 12:08 PM
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My '06 averages 16 or less. I hand calc every fillup. I picked up 1 mpg whn I replaced the injectors, but @16 is the best I can do with country driving (no long hauls though).

2006 F250 Lariat Supercrew, ESOF 4x4, 18" tires, FX 4, HD Alt., block heater, Integrated Trailer Brake Controller, Upfitters, power rear window, cab lights - delivered 10/25/05

Ford Remote Start; High idle mod; Timbren load levelers, Scangauge II, Blue Spring upgrade, Quick Start 200 amp large frame alternator, 2 batteries January 2010; GPCM replace October 2011; 2 EGR valves; EGR Cooler replaced 12/30/11; Performance Machine & Mfg. coolant filter added 1/2/12; Rotella T6 5W40 oil; turned rotors, replaced brake pads for 1st time 1/7/12 101K miles; GPCM, both subharnesses and all 8 glowplugs replaced 1/5/13 at 118,000 miles; 2 Ford batteries replaced under battery warranty twice, the latest 9/18/2015; FICM power supply board replaced with Dorman board 11/20/13. Coolant flushed and replaced with Prestone ELC 9/27/14. STC fitting 10/19/14; Dummy Plugs 11/8/14; Turbo rebuilt 11/29/14; cold side CAC tube and boots replaced with metal tube 1/24/15; replaced hot side boots 1/30/16.
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post #11 of 11 (permalink) Old 02-20-2019, 06:25 PM
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Quote:
Originally Posted by DownEastDiesel View Post
My first F250 diesel was purchased in 1998 and ever since then I have had guys with the exact same truck tell me they get 22MPG.
Any chance these guys are fisherman?


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

SOLD:
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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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