OBS mpg - Ford Powerstroke Diesel Forum
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post #1 of 21 Old 10-07-2009, 03:37 PM Thread Starter
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OBS mpg

Well, just finished my tortureous test of mpg in my 96' f250. I ran only from the front tank and on the first tank i got 18 mpg even with no additives at all. On the second tank i put in a 16 ounce bottle of 2stroke oil and ended up with 18.7 mpg I mostly ran the truck back and forth to school where its 55 mph about 90 percent of the way and the rest is stop and go traffic. I have a bully dog 6pos tuner (junk) on the second tune, diy intake, 4 inch exhaust with a 3 inch dp. On average i usually get about 16 but i ran these last 2 tanks with a really light foot never getting over 2000 rpm (auto tranny).


I was wondering what the best you guys out there have ever gotten with your obs? And what other mods do you think i could do to the truck to get even better milleage?
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post #2 of 21 Old 10-07-2009, 03:39 PM
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I get around 22-20 with a light steady foot with the chip on stock.

1994.5, 2.5 lift, 35s on 17x10 MHTs, Intercooled, Stage 3 injectors, Nitrous, 6637, Water/Meth, 3" DP, 4" Magnaflow, IDM, TS Chip, 4.10s, 33s, 4 Pod pillar. 6000k HIDs.

Converted From ZF5 To E4OD w/ PCS TCM-2000 Tuneable Trans Computer, 6.0L Trans cooler and Triple Disc TC.

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post #3 of 21 Old 10-07-2009, 03:41 PM
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The best I have gotten was 19.7 all highway. I normally get around 17 and dont baby it a whole lot, but also dont drive it like its a race car.

Nick, BPS Historian
1995 F-250 4x4 7.3 Powerstroke
Isspro Gauges, Tony Wildman Tunes, PSGH Stage 1 Injectors, Early 99 Intercooler, ATS Stage 6 E4OD, TCI Tranny Cooler, Snow Water/Meth, Traction Bars, EBPV Brake, TC Lockup Switch, Spray-on Liner, K&N Intake w/ NAPA 6637 Filter, 3" downpipe, 5" mitre stacks.
Waiting to be installed: Electric fuel with A1000 pump and Stealth DIY Dual HPOPs
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post #4 of 21 Old 10-07-2009, 09:36 PM
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I pull off 16-18 MPG but I drive with the skinny pedal touching the oil filter.

Bill

1996 F250 SC/SB 4X4 XLT
1997 F250 RC/SB 2WD project
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I still say that those Dodge mirrors have as much business on a OBS Ford as yoga pants have on a fat chick...my .02
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post #5 of 21 Old 10-07-2009, 09:58 PM
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I can pinch out 20 if I keep my foot out of it. Normally I do get 17-19, I have a TC lock switch so I can keep RPM REAL low.

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post #6 of 21 Old 10-07-2009, 10:38 PM
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i mostly do a 50/50 mix. so i have been seeing 14-16mpg with 70 being the fastest. and traffic. then i got up to 19.5ish on all hwy.

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post #7 of 21 Old 10-08-2009, 06:55 AM
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i rarely check mine as i run wvo. but the last few tanks have been on straight d2

first check 17 - normal driving - for me
second check 18.5 - lighter on the foot, some heavier stomps
on third now - taking it easy, staying near 55 to 65 max
all empty

i was looking at starting a thread on this as im officially checking mine.

i have 95 f250, 4x2, ext. cab, long bed, 285k, 4.10 gear

-Matt

Late 99 (2/99) Black F250, CC LB 4x4 Lariat 214k. All Stock for the moment...

1995 PSD, ext cab, one wheel wonder , 297k miles, 30k on wvo. totaled 5/8/11 RIP This truck is for sale as a parts truck (Jason is about to receive forged rods, and drop kick his PMR's)
DB high torque starter
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post #8 of 21 Old 10-08-2009, 07:22 AM
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When I first got mine it got 16-17.

Since I have put on the DIY intake, changed the lift pump, and done the fpr shim and now regularly run fuel additive 18 is what I get just runnin around here close. If there is any highway driving it goes up to 19-20.

About a month ago I made a 300 mile trip doin 60-65mph never exceeded 2200rpm and got a hand calculated 24.3 mpg.

I think one of the main things that gives me the mpg's is that mine has the 3.55's pullin 35" tires therefore she is pretty high geared.

My truck:
99.5 F250 4x4 Ex cab long bed
7.3, zf6
Swamps 175/30's
Cales tunes
DIY Intake & Zoodad mod
Muffler Delete
DIY CCV mod
Foil Delete
DIY leveling kit
AIH delete
Autometer Phantom II Boost and Pyro
Luk Clutch

Dad's Truck:
2001 F250 4x4 Ex cab short bed
7.3, 4R100
Muffler Delete
DIY Intake & Zoodad mod
Foil Delete
DIY CCV mod
AIH Delete
DP Tuner F5
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post #9 of 21 Old 10-08-2009, 07:29 AM
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id love soem 3.55's. i dont pull often but i figure when i do ill just tolerate it. or get a chip

-Matt

Late 99 (2/99) Black F250, CC LB 4x4 Lariat 214k. All Stock for the moment...

1995 PSD, ext cab, one wheel wonder , 297k miles, 30k on wvo. totaled 5/8/11 RIP This truck is for sale as a parts truck (Jason is about to receive forged rods, and drop kick his PMR's)
DB high torque starter
DIY 6637
Marinco Mod
DIY Electric fuel w/ wvo conversion

"A clean house is a sign of a mis-lead life."
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post #10 of 21 Old 10-08-2009, 10:00 AM
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MPG

I have a 95 Dually with 4.10 diff and @ 65 with cruse on I got a best of 19. Driving 75 - 80 I seem to get about 17 on the road and 14 - 15 around town driving back and forth to work.

Rick

Dirty South Strokers
95 Crew Cab Dually PSD
3"dp into 4"exhaust
Gauges: Boost, Trans Temp, EGT
K&N Intake
Performance built Trans
Edge EZ
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