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Old 01-24-2006, 12:21 PM   #1
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Mileage with powerstroke?

Im wanting to get a beefier TV (F150 at present) and find the powerstokes appealing. Can anybody give me an idea of what sort of milage can be expected from a 8 cyl 7.3 L Turbo Diesel Engine, with 3.73 Rear Axle Ratio. I tow a Trade Wind, call it 7,000lbs loaded. I dont get in a hurry driving if Im towing or not. Thanks!
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Old 01-24-2006, 12:40 PM   #2
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Originally Posted by Gen Disarray
Im wanting to get a beefier TV (F150 at present) and find the powerstokes appealing. Can anybody give me an idea of what sort of milage can be expected from a 8 cyl 7.3 L Turbo Diesel Engine, with 3.73 Rear Axle Ratio. I tow a Trade Wind, call it 7,000lbs loaded.
i cant tell you, but ill give you an idea from my circumstance..my 01 1 ton 12 pass. van has a 3.55 rear end. i get around 21 mpg solo, and 12-14 pulling my coach 65-60 mph. for some reason unbeknownst to me, the 7.3 was only available in the 1 ton van. it is available in the f-250. it only has 53000 miles so its not broken in yet....
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Old 01-24-2006, 12:58 PM   #3
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Rodney,
With our 97 powerstroke crewcab 4WD shortbed 4spd. auto,4:10 gearing, we average empty: City 15-16mpg, Highway 17-20, and towing our 28' Abassador 14 mpg. Our powerstroke has some modifications for additional torque, but mpg figures have remained the same.Jeff
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Old 01-24-2006, 01:25 PM   #4
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Quote:
Originally Posted by Gen Disarray
Im wanting to get a beefier TV (F150 at present) and find the powerstokes appealing. Can anybody give me an idea of what sort of milage can be expected from a 8 cyl 7.3 L Turbo Diesel Engine, with 3.73 Rear Axle Ratio. I tow a Trade Wind, call it 7,000lbs loaded. I dont get in a hurry driving if Im towing or not. Thanks!
I've owned 3 Powerstroke powered Ford Super Duty trucks, 2 6-speed manual 7.3s and a 5-speed auto 6.0.

I average 15-16 MPG commuting with my current 6.0 and about 18.5 on the highway. Towing my 30' Excella (nearly 8,000 lbs loaded) I get 12-13. Both of my 7.3s got about the same mileage loaded (hauling a 4,000 lb slide-in camper), about the same commuting, and a best of 17.5 on the highway.
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Old 01-24-2006, 01:30 PM   #5
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7.3 Fuel Mileage

My 01 F350 crew cab 4X4 with 3.73 rear pulling my 25', which I had just weighed at 7240 lbs., one passenger, on the flat at 55mph, summer fuel, got 16.4 mpg. This was very carefully filled with fuel and calculated by hand. City driving and hard mountain pulls got 13.8 mpg. Without a trailer and no passengers driving 70 mph with the speed control and air conditioning on over 750 miles of interstate to the southeast, got 24.75 mpg. I carry 55 psi. in the front tires and 75 in the rears. I also pull a gooseneck horse trailer, but have no mileage with that alone so I could not calculate it. My overhead trip computer says my over all mileage is 14.9 mpg.

My engine is stock, as are my intake and exhaust systems. I pull in overdrive when on the flat and keep it in direct for the hills. I haven't hit mountain climbs yet that it wouldn't pull in high gear. I would say I have an educated accelerator foot.

I am sure winter mileage would be less, because it has lower BTU. I am quite pleased with its performance. It has 70,000 miles on it.

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Old 01-24-2006, 02:10 PM   #6
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Rodney,

I have a Duramax/Allison, but maybe the data is comparable: I took the rig to CO and back this fall, and averaged 13 for the whole trip. I get about 18 in normal driving. I loved the power available when we made the long ascents over the passes out there. Powerstroke or Duramax - you're going to love your rig.

Pat
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Old 01-24-2006, 02:43 PM   #7
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Quote:
Originally Posted by Steve Heywood
I've owned 3 Powerstroke powered Ford Super Duty trucks, 2 6-speed manual 7.3s and a 5-speed auto 6.0.

I average 15-16 MPG commuting with my current 6.0 and about 18.5 on the highway. Towing my 30' Excella (nearly 8,000 lbs loaded) I get 12-13. Both of my 7.3s got about the same mileage loaded (hauling a 4,000 lb slide-in camper), about the same commuting, and a best of 17.5 on the highway.
Steve, I have a 2005 F-250 Super Crew with the 5-speed automatic 6.0 L with 3.73 rear end similar to yours. I get 16 MPG's if I don't leave the county and all driving is in town. When I commute 8 miles to interstate and 17 miles interstate on to work I average a tad better than 20 MPG's. I just got a recall saying that the computer was incorrectly set at the factory and I need to take it to a dealer and have it properly programmed and that I will experience slightly less acceleration during the first few minutes during cold weather until the engine warms up.

I am concerned that changing the programing might alter my mileage in a negative way. A buddy of mine with an '03 F-250 has recommended that I get a programmer and change the programming anyway so it might be accedemic re: Ford's re-programming but that is a ways off before I get one. This is my first diesel and I don't know what to expect but the mileage is about 2-3 MPG's better than my F-150 extended cab gets. I haven't towed with it so I don't have any figures there but I would guess it will get about 12-14. Any suggestions or further explanations re: the recall to have it re-programmed would be welcomed.
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Old 01-24-2006, 02:50 PM   #8
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Quote:
Originally Posted by Minnie's Mate

I am concerned that changing the programing might alter my mileage in a negative way. A buddy of mine with an '03 F-250 has recommended that I get a programmer and change the programming anyway so it might be accedemic re: Ford's re-programming. This is my first diesel and I don't know what to expect but the mileage is about 2-3 MPG's better than my F-150 extended cab gets. I haven't towed with it so I don't have any figures there but I would guess it will get about 12-14. Any suggestions or further explanations re: the recall to have it re-programmed would be welcomed.
With a 7.3L I wouldn't worry too much about programming changes, but on the 6.0L (certain model years) I would be very concerned with modding any of the programming because the 6.0L (I believe that was the engine) was plagued with so many issues, Ford was just looking for reasons to walk away from the problems.

Older Duramax engines should also be no problem, but I don't know about the new (LBZ) Duramax engine.
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Old 01-24-2006, 03:20 PM   #9
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With a 7.3L I wouldn't worry too much about programming changes, but on the 6.0L (certain model years) I would be very concerned with modding any of the programming because the 6.0L (I believe that was the engine) was plagued with so many issues, Ford was just looking for reasons to walk away from the problems.

Older Duramax engines should also be no problem, but I don't know about the new (LBZ) Duramax engine.
I have been very hesitant to take my friend's advise. His truck has the 7.3L. I think it was the last year the 7.3L was available. I know the first year of the 6.0L there were problems but supposedly Ford had worked those out before the '05's. I don't have too many miles on mine and am happy with the mileage and performance so far so I haven't been in any hurry to make any changes. In fact I had no plans to buy a programmer before the factory warranty was up at the earliest and maybe not even then. I want to see how it tows first. The only reason I have even considered a programmer at this point is that so many folks I know that have them sware by them and Trailer Life did an article on them last spring and seemed to endorse them. But again, I want to see how it performs towing during the warranty and then make a decision. However, on the other hand, Ford dealers sell programmers through their parts departments.
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Old 01-24-2006, 04:10 PM   #10
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I own both. I have a 7.3 one ton five speed manual dually with a 4:11 rear end and a 6.0 three quarter ton five speed auto with the 3:73 rear end. Previously, I owned three other 7.3 trucks all with the manual transmission. My experience has been that the above figures are all pretty accurate. It all depends upon how hard you drive them, how fast, how much they are left to idle, whether you are out on the open road or in stop and go traffic and what kind of load you are pulling. What I do know is that the various versions of the 7.3 for me were all very consistent in their mileage. I consistently got 15 to 16 miles/gallon out on the open road pulling a 16 foot x 7 foot gooseneck horse trailer with 4-5 horses in it back and forth to Colorado from Texas. Around town, and out in the pasture they spent a lot of time idling and I often averaged only 10-11 miles a gallon. With the 7.3 engines I didn't see a lot of difference whether I was pulling a trailer or not out on the open road. Mileage didn't seem to vary more than a couple of miles/gallon. None of the 7.3 engines ever had a programmer installed and I haven't installed any aftermarket programmer on the 6.0.

With the 6.0, I seem to have a great deal more power, but mileage has been all over the place. I've gotten as high as 24 miles to the gallon driving out on the highway empty and keeping my speed down to 55 miles/gallon. I've gotten as low as 9.9 miles/gallon pulling our 31' Airstream and running 70 out on the open road. My records indicate that I averaged 15.42 on a recent trip to Colorado running empty and 11.96 miles/gallon with the Airstream making the same trip in the 6.0 truck. Those figures would probably improve if I made the same trip today because I now have over 6,000 miles on the truck and its computer was reprogramed by Ford. Since reprogramming, the truck seems to get better mileage.

I am going to offer you some advice. None of these trucks NEED an aftermarket programmer to have acceptable performance and fuel mileage. I would avoid installing a programmer like the plague. These engines will give you service well into the 250,000 to 350,000 mile range with little trouble if you treat them right, service them on schedule and keep the aftermarket gadgets out of the engine compartment. Install a programmer and you won't have to wait long to before you'll need to join the DieselStop.com forum where you can seek advice from the many who have programmed their engines into oblivion. As to Ford offering aftermarket programmers, you better check on that information with your dealer because many dealers in my neck of the woods will void warranties if they find such equipment installed.

If you'll follow your plan of towing and driving your truck in its stock condition, you will find you don't need the aftermarket programmer to have a truck that is enjoyable to drive and one that is a very capable vehicle. I have fourteen different trailers here on the ranch. My 7.3 is the truck I use to pull them. I pull a large tractor around one day, a load of cattle or horses the next, and perhaps a load of hay or my Airstream the next. My 7.3 has always performed here in Texas as well as in the mountains of Colorado most admirably. As stated above, in most instances it will pull any pass in Colorado in 4th gear as fast as you are willing to drive it. It pulls the Levita and Raton passes at 70 miles an hour since neither has sharp curves to slow you down. As long as you can keep the RPMs above 2000 to 2200, the turbocharger kicks in and will take you easily up the grade. The Levita Pass is around 11,000 while Raton is between 9 and 10,000 feet. That kind of altitude with that kind of performance is enough for me.

One final word about the 7.3 vs. the 6.0. If you are buying the truck for driving out on the open road and it won't be idling that much, the 6.0 definitely has more power, but if the truck is to be in situations like I use mine here around the ranch where it idles while I am feeding and while I am opening pasture gates, or in your situation where there will be a lot of city driving then I would recomend you stay with your plan of purchasing a 7.3. The 7.3 is a proven design. It doesn't have to meet emissions requirements. It doesn't have an EGR valve to clog and cause problems and its computer system is just not as complicated. The 7.3 is a very dependable, proven engine. The jury is still out on the 6.0.

GStephens
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Old 01-24-2006, 04:28 PM   #11
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The Tim Allen in all of us would love to add more HP, torque and rubber melting performance to our cars. Having gone that route on one of my Impala SSs, sure is fun, costs a bit to do, but if the truck does what you need it to do and you're happy with it, blow your friends off. If you in fact want more power cause for some reason you need it and want that diesel to get better 0 to 60s and better performance when towing, that would be the main reason I'd do it. Better fuel economy should not be a reason to upgrade. More power costs....period. You didn't get a Greenpeace card when you bought your truck, but did come with an honorary OPEC membership. You get an additional free year of OPEC membership for every MPG you deacrease by adding power additions to the truck.

The 6.0 has had many fixes leading to the latest version rolling off the line these past few months. I would still be gunshy on a 6.0L given all the issues.

This time around though with the new Suburban, I left it stock cause it does what I need it to do very well.....and I can use some of that money I would have spent modding the Burb on some important things, like pinball machines!
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Old 01-24-2006, 05:03 PM   #12
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Older Duramax engines should also be no problem, but I don't know about the new (LBZ) Duramax engine.
I have had an '05 Chevy LLY Duramax/Allison and I now have an '06 Chevy LBZ Duramax with the six speed Allison. The '05 was a really good truck and the "06 is a GREAT truck!

Got the new truck in early October, left for a round trip to Orlando with our Airstream in tow three days later. We averaged 13.6 mpg for the 2400 mile trip at an average speed of 65 mph. I have averaged 21 mpg @ 65 mph on two seperate 200+ mile non-towing round trips. The LBZ makes more power, it is quieter, and it gets better fuel economy than my '05. It has to be driven to be believed.
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Old 01-24-2006, 05:20 PM   #13
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Running gross vehicle weight 9000 + pounds my extended E350 7.3 with 3.55 differential gets 17 to 18. Towing 8000 pounds plus gets 12.7 on good days. Now going down hill everywhere all the time I have never have filled it up after one of those trips, so I figure diesel mileage is real good. Now going the other way, well you just donít want to know. But I love my 7.3 diesel.
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Old 01-24-2006, 06:24 PM   #14
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Originally Posted by GStephens

I am going to offer you some advice. None of these trucks NEED an aftermarket programmer to have acceptable performance and fuel mileage. I would avoid installing a programmer like the plague. These engines will give you service well into the 250,000 to 350,000 mile range with little trouble if you treat them right, service them on schedule and keep the aftermarket gadgets out of the engine compartment. Install a programmer and you won't have to wait long to before you'll need to join the DieselStop.com forum....

If you'll follow your plan of towing and driving your truck in its stock condition, you will find you don't need the aftermarket programmer to have a truck that is enjoyable to drive and one that is a very capable vehicle.

The 7.3 is a proven design. It doesn't have to meet emissions requirements. It doesn't have an EGR valve to clog and cause problems and its computer system is just not as complicated. The 7.3 is a very dependable, proven engine.
my sediments exactly......
norby
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