4x4 6 speed MPG??? - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks 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 7.3L Power Stroke engine.

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post #1 of 20 (permalink) Old 06-01-2006, 12:19 PM Thread Starter
 
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4x4 6 speed MPG???

What are you guys getting that drive the 7.3 4x4 6 speeds getting? looking for some realy data, not best tank ever. Mostly concerned about unloaded highway numbers. Looking for a dually, but a comparison between DRW &SRW would be good. Thinking about getting rid of my Dodge and getting a 7.3. [img]/ubbthreads/images/graemlins/cool.gif[/img] BTW, at 70 mph my dodge gets 20.5 on summer fuel!
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post #2 of 20 (permalink) Old 06-01-2006, 12:26 PM
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Re: 4x4 6 speed MPG???

I average 17.5 mixed towing around town and 19 to a best of almost 26 highway emty

01 250 PSD SC 6sp camper pkg -5.6k to 25k pot- AIS- Reese Titan - SC max tuner- Rhino lined-
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post #3 of 20 (permalink) Old 06-01-2006, 12:35 PM
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Re: 4x4 6 speed MPG???

i get 18.5 with half around town and half highway with truck in sig

1999.5 (5/99) F-350 SC, LB, ZF-6, 4X4: ATS Compressor Housing, BBH, K&N FIPK & Drycharger, DP Tunes 60T, Isspro Pyro & Boost, 4" MBRP & Delete Pipe, AD's (for now) ITP HPX, OBA & Reg Return, AIH Delete, Oil Guard, Couple Dongles

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post #4 of 20 (permalink) Old 06-01-2006, 12:37 PM
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Re: 4x4 6 speed MPG???

Comparable to Overload, for summer fuel this year. Winterized is 16 to 16.5 mpg.

Highway speeds of 65 -70, Freeway 75 and some city driving.

On "winter" fuel in Arizona I did get 19 to 20.5 at highway speeds of 55mph and city driving. That was over three tanks on a Christmas vacation.

Fuel quality and lower relative speeds in Arizona were the two factors.IMHO

'00 F250 XLT 4x4 (born on 6/00), manual tranny & hubs, SPA Techniques EGT/Boost Gauge, Homemade Return Fuel Regulator, Toro Liner, 203* T-stat and Coolant Filter, LUK Clutch, flywheel & pressure plate, Amsoil Dual Bypass Filter
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post #5 of 20 (permalink) Old 06-01-2006, 01:32 PM
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Re: 4x4 6 speed MPG???

My lifetime (80k mi) average is just a shade under 16 mpg. Most of my miles are a 15 mile one-way commute with some longer trips with slide-in camper.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
'99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version
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post #6 of 20 (permalink) Old 06-01-2006, 06:48 PM
 
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Re: 4x4 6 speed MPG???

With 4.10 gears and all mountain driving, lifetime average with 200,000 on truck is 14.7 miles to the gallon. 50/50 towing and empty. Usually towing less than 10,000 pounds I get around 12. More than 10,000 anywhere from 8 to 10 miles to the gallon. Empty 14 to 16.
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post #7 of 20 (permalink) Old 06-01-2006, 08:46 PM
 
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Re: 4x4 6 speed MPG???

I average 18 with the truck in my sig. That is lightly loaded for most of the tank. It has never been empty for a full tank since I have owned it. It has 3.73 gears. Best tank ever was 25 all on the interstate at 70-75 lightly loaded.
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post #8 of 20 (permalink) Old 06-01-2006, 09:43 PM
 
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Re: 4x4 6 speed MPG???

With my late 99, crew cab dually, 4.10's, 6 speed, over the last 70k I've averaged 16 mpg, about 70% highway between 65 and 70 mph. I find it respectable enough for a truck of that size. On the scale it was almost right at 8000 lbs.
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post #9 of 20 (permalink) Old 06-01-2006, 09:45 PM
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Re: 4x4 6 speed MPG???

I average 17.5-18.5 with summer fuel and 15.5 to 16.5 with winter fuel. I try to keep the tach at or under 2000 as much as possible.

Mark

99.5 F350 XLT SC LB SRW 3.73 4x4 7.3 6Spd.
Only mods are AIS, Moog ball joints and leveling kit (X code springs)
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post #10 of 20 (permalink) Old 06-01-2006, 09:47 PM
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Re: 4x4 6 speed MPG???

I get almost perfect 22 empty. But hauling 6k on a little trailer I get 17mpg. I tow a 40' loaded to the gills and I get 15mpg. These are all taking it easy No flying through the gears. [img]/ubbthreads/images/graemlins/cool.gif[/img]

99.5PSD, F250, 4x4, wht. CC, SB, Line-X, 200K+ , 6spd,LUK Ceramic Clutch, Warn Premium hubs, DP Tuner F5 stock/high idle/40T/60T/80E/100hp, Casserly STG1 sticks, DIY TYMAR, No EBPV, 08 Diff Cover, 4"MBRP S/S, Banks wheel*traded for stock wheel*, ATS Housing, HXLine, Zoodad Mod, CCV Mod, AIH removed, Shimmed fuel, Isspro Boost Guage & Pyro Guage, 2" Level Kit, Firestone Air Support Springs, BFG AT k/o, CB Galaxy DX949, DUAL Antennas, Lead Foot came stock

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post #11 of 20 (permalink) Old 06-01-2006, 09:54 PM
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Re: 4x4 6 speed MPG???

Funny thing is, when I lived at Ft. Huachuca 7 years ago I was getting 19. I do believe that higher elevation has a positive effect on mileage as I was able to get 21.6 (my best) on a trip from Twin Falls, Idaho through Yellowstone to Billings, Montana. And a max speed of 60 through that portion didn't hurt things either. But then moving to Germany I struggled to get 16 at times on the autobahn [img]/ubbthreads/images/graemlins/grin.gif[/img]

Mark

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Only mods are AIS, Moog ball joints and leveling kit (X code springs)
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post #12 of 20 (permalink) Old 06-01-2006, 10:46 PM
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Re: 4x4 6 speed MPG???

You 6 speed guys are going to hate this. Since I got my tuner from DP Tuners, and finally got my tranny fixed, I'm getting 21 to 22 mpg on the highway at 65-70 mph. Last tank was 21.8 all highway and unloaded in the economy setting. Of course it went way down on the return trip towing my coach, 11+.

2012 Ford F-250 SD; 6.7L PSD; Crew Cab; SB, SRW; Lariat; Air Lift rear suspension; Rancho shocks; Mag-Hytec Differential cover
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post #13 of 20 (permalink) Old 06-02-2006, 01:13 AM
 
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Re: 4x4 6 speed MPG???

I took an 1800 mile round trip with just the truck and no trailer and got 18.4mpg running 80mpg or better (it was an emergency and I could get there quicker driving than by catching a plane)
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post #14 of 20 (permalink) Old 06-02-2006, 01:38 AM
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Re: 4x4 6 speed MPG???

[ QUOTE ]
You 6 speed guys are going to hate this. Since I got my tuner from DP Tuners, and finally got my tranny fixed, I'm getting 21 to 22 mpg on the highway at 65-70 mph. Last tank was 21.8 all highway and unloaded in the economy setting. Of course it went way down on the return trip towing my coach, 11+.

[/ QUOTE ]

That "just shy of 16 mpg" I posted, included one tank with Jody's 80 HP Econo Tuned PCM installed. The mileage with that tank popped up about 1/2 mpg, and that was while I was playing with the new found power [img]/ubbthreads/images/graemlins/biggrin.gif[/img]. I'm looking forward to some improvement as soon as I calm down. [img]/ubbthreads/images/graemlins/phoney.gif[/img]

I forgot to say in my previous post that I run with the hubs locked all winter (a full 6 months), which drops the mileage a bit, as does winter blend fuel.

First truck -- 1929 Model A Ford pickup, restored from ground up. Wish I still had it!
'99.5 F250 PSD Supercab LB 4x4, ZF-6 w/SB Con OFE, 3.73LS, Boost & pyro gauges, Swamps S175/146 injectors, DP 80 HP Econo PCM (classic version
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post #15 of 20 (permalink) Old 06-02-2006, 04:45 AM
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Re: 4x4 6 speed MPG???

I've averaged about 19.6 mpg so far this year on the summer fuel. Last summer my average was 20.0 I drive about 75% highway, 25% city, lightly-loaded most of the time. I rarely tow these days.

It drops down to 16 ~ 17 on winter blend, except for this past winter when grelchy post-Katrina fuel caused it to plummet to 14 for a couple of tanks.

I've just recently turned off my Quadzilla Stealth Module, and installed a DP tuner chip. Aside from a few moments of youthful "experimentation," ( [img]/ubbthreads/images/graemlins/shocked.gif[/img] [img]/ubbthreads/images/graemlins/rolleyes.gif[/img] [img]/ubbthreads/images/graemlins/shrug.gif[/img] [img]/ubbthreads/images/graemlins/biggrin.gif[/img] [img]/ubbthreads/images/graemlins/wink.gif[/img] ) I've been driving it normally in 80 Econo. Learning to drive it in 80 Econo is perhaps the more accurate phrase. The shifting is a little weird in that program.

There are some major indicators that show my consumption is even further reduced, and I've been running it for a tank and 3/4, but I am not yet prepared to state any conclusive data.

"Nothing in life is so exhilarating as to be shot at without result." - Sir Winston Churchill

May your road stay clear & dry, may your fuel never gel, and may you never be outsmarted by your idiot lights.


2002 F-250 XLT SC LB 4x4 7.3PSD 6-Sp 3.73 L-S, Snugtop Snuglid Tonneau, 235/85 MC HTRs, <span style="color: red">DPTuner F5</span> AFE Stg II, Turbo LifeSaver, MAP BRV, Autometer Cobalts, Magnaflow 4", WW, TAG, AIH del, CCV, AirDog, In-tank, Harpoon, HPX, ITP fuel sys, LL8 del, 203*, Oilguard & SP Diesel bypass filtration, ART rotors, PFC pads, Heater Core Ctl Valve, Bilsteins, Velvet Ride Shackles, South Bend Clutch, <span style="color: green">21.27 mpg</span>

2004 <span style="color: red">E</span>-350
XLT Wagon 6.0PSD 3.55 L-S TDM EZ-Entry 11 pass., AIC, custom MBRP 4" w/dual Aeroturbines, Airdog, harpoon, Overhead Cobalts

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