MPG - 6.0 vs. 7.3 - Diesel Forum - TheDieselStop.com
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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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Old 01-01-2008, 12:04 PM   #1 (permalink)
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MPG - 6.0 vs. 7.3

Beginning to look for a 6.0 Excursion. How does the mpg of a 6.0 compare to a 7.3, both w/ the auto. Not that I would consider a non-diesel, but, how does the 6.0 mpg compare to the V10 or V8 gasser?
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Old 01-01-2008, 12:11 PM   #2 (permalink)
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Re: MPG - 6.0 vs. 7.3

my 04 gets 19 on the Hwy running 75 mph+..about 16 in town..10 pulling the 11K# T/H through the mountains of the west..

i can get 20+ on the Hwy if i slow down..
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Old 01-01-2008, 12:12 PM   #3 (permalink)
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Re: MPG - 6.0 vs. 7.3

Having both, the 7.3 got way better mileage. double the gassers. and about 10mpg more than the 6.0l highway with a chip..
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Old 01-01-2008, 12:37 PM   #4 (permalink)
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Re: MPG - 6.0 vs. 7.3

My 03' and 04' 6oh got pretty close to the same mileage as my 03' 7.3L. The 7.3 does get a little bit better mpg, but not enough to really fuss about, .5 to 1 mpg at the most.



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Old 01-01-2008, 01:00 PM   #5 (permalink)
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Re: MPG - 6.0 vs. 7.3

This is basically it, having both gasser excursion, 6.0, and 7.3. The 7.3 and 6.0 get basically the same mileage, the 7.3 is superior on reliability. The V10 I had at best got 13.5 on the highway, made good power and was very reliable. Got to ask yourself, do you feel lucky? Well, do ya? Couldn't help myself, had to through in as Eastwood quote for some reason, but if you do feel lucky, the 6.0 makes the same MPG as the 7.3, but makes more power for sure. So if you want the power, and wish to gamble, go 6.0. If not, I would be looking at a 7.3l.
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Old 01-01-2008, 01:10 PM   #6 (permalink)
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Re: MPG - 6.0 vs. 7.3

I disagree with the previous posts. My 6.o litre gets up to 26 mpg (cdn)vs my 97 7.3 litre got at best 21 mpg (cdn) The 6.0 litre has a 3.73 rear end the 7.3 litre had a 4.10. Not quite apples to apples. My 6.0 litre has been super reliable and wonderfully smooth.
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Old 01-01-2008, 02:38 PM   #7 (permalink)
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Re: MPG - 6.0 vs. 7.3

You've got a brain freeze from all that time in the frozen wasteland. The rear gear ratios are the reason for your mpgs.
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Old 01-01-2008, 07:59 PM   #8 (permalink)
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Re: MPG - 6.0 vs. 7.3

26 huh, Hmmmm. Sounds wishful, unless you have done mods like Dave W, otherwise no 6.0 will get that. Don't believe the lie-o-meter if that is what you are using to calc mileage.
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Old 01-02-2008, 12:04 AM   #9 (permalink)
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Re: MPG - 6.0 vs. 7.3

either way...the 7.3 will be driving long past the 6.0's

How many 300k mile 6.0s have you seen?
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Old 01-02-2008, 11:58 AM   #10 (permalink)
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Re: MPG - 6.0 vs. 7.3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DragRag</div><div class="ubbcode-body">26 huh, Hmmmm. Sounds wishful, unless you have done mods like Dave W, otherwise no 6.0 will get that. Don't believe the lie-o-meter if that is what you are using to calc mileage. </div></div>

If you re-read his post he stated that it was Canadian so maybe lph?
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Old 01-02-2008, 12:02 PM   #11 (permalink)
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Re: MPG - 6.0 vs. 7.3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 05Duallyon22s</div><div class="ubbcode-body">either way...the 7.3 will be driving long past the 6.0's

How many 300k mile 6.0s have you seen? </div></div>

Well, considering most folks put about 10-15K miles a year on thier trucks I doubt you will see many since the 6.0's have only been out a little over 5 years.
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Old 01-02-2008, 02:25 PM   #12 (permalink)
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Re: MPG - 6.0 vs. 7.3

I do 100 to 125 miles a day round trip to work so I will let you know how my 04 6.oL does.

I bought the original 96 7.3L with 138,587 miles on it and it is my toy now with 320,000 plus
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Old 01-02-2008, 09:11 PM   #13 (permalink)
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Re: MPG - 6.0 vs. 7.3

NO I meant mpg in cdn gallons. Our gallons are larger then USA gallons and fuel mileage varies as well. The difference is 20%. I also reiterate my earler statements about my fuel economy. My statement about 26 mpg is of course my best not my average, as was my statement about 21 in my 7.3l. These numbers are calculated and not according to the computer. This mileage has been obtained a number of times on long trips, no wind, cruise set at 100km/hr or 62.5 m/hr. Tires pressure @ 55psi front and 55 rear unloaded. I always use a fuel additive which I buy at Saskatoon Diesel Services. I run synthetic oil. These calculations are in summer using summer fuel. I have noticed that an increase of 10km/hr makes a noticeable difference in fuel economy. I noticed about a 10 - 15% improvement in fuel economy after installing the AFE air intake, exhaust and Vanaaken smart box. I have had good luck with my 6.0l to date. It does leak oil more then my 7.3 but the smoothness and power are much improved. By the way, i installed a banks system on my 7.3 which increased its power but it was not near as smooth nor as powerful as my 6.0l. So, maybe my brain is frozen but I even a frozen brain can appreciate the greater cruising range on my 6.0l vs my 7.3. Same size tank but longer distance can mean only one thing, better fuel economy.
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Old 01-02-2008, 10:16 PM   #14 (permalink)
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Re: MPG - 6.0 vs. 7.3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 60lpower</div><div class="ubbcode-body">NO I meant mpg in cdn gallons. Our gallons are larger then USA gallons and fuel mileage varies as well. The difference is 20%. I also reiterate my earler statements about my fuel economy. My statement about 26 mpg is of course my best not my average, as was my statement about 21 in my 7.3l. These numbers are calculated and not according to the computer. This mileage has been obtained a number of times on long trips, no wind, cruise set at 100km/hr or 62.5 m/hr. Tires pressure @ 55psi front and 55 rear unloaded. I always use a fuel additive which I buy at Saskatoon Diesel Services. I run synthetic oil. These calculations are in summer using summer fuel. I have noticed that an increase of 10km/hr makes a noticeable difference in fuel economy. I noticed about a 10 - 15% improvement in fuel economy after installing the AFE air intake, exhaust and Vanaaken smart box. I have had good luck with my 6.0l to date. It does leak oil more then my 7.3 but the smoothness and power are much improved. By the way, i installed a banks system on my 7.3 which increased its power but it was not near as smooth nor as powerful as my 6.0l. So, maybe my brain is frozen but I even a frozen brain can appreciate the greater cruising range on my 6.0l vs my 7.3. Same size tank but longer distance can mean only one thing, better fuel economy. </div></div>



I usually don't do this, but this time I would have to throw the BS flag way up high [img]/forums/images/%%GRAEMLIN_URL%%/whistle.gif[/img]



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Old 01-03-2008, 12:12 PM   #15 (permalink)
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Re: MPG - 6.0 vs. 7.3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jmiskovic</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 60lpower</div><div class="ubbcode-body">NO I meant mpg in cdn gallons. Our gallons are larger then USA gallons and fuel mileage varies as well. The difference is 20%. I also reiterate my earler statements about my fuel economy. My statement about 26 mpg is of course my best not my average, as was my statement about 21 in my 7.3l. These numbers are calculated and not according to the computer. This mileage has been obtained a number of times on long trips, no wind, cruise set at 100km/hr or 62.5 m/hr. Tires pressure @ 55psi front and 55 rear unloaded. I always use a fuel additive which I buy at Saskatoon Diesel Services. I run synthetic oil. These calculations are in summer using summer fuel. I have noticed that an increase of 10km/hr makes a noticeable difference in fuel economy. I noticed about a 10 - 15% improvement in fuel economy after installing the AFE air intake, exhaust and Vanaaken smart box. I have had good luck with my 6.0l to date. It does leak oil more then my 7.3 but the smoothness and power are much improved. By the way, i installed a banks system on my 7.3 which increased its power but it was not near as smooth nor as powerful as my 6.0l. So, maybe my brain is frozen but I even a frozen brain can appreciate the greater cruising range on my 6.0l vs my 7.3. Same size tank but longer distance can mean only one thing, better fuel economy. </div></div>



I usually don't do this, but this time I would have to throw the BS flag way up high [img]/forums/images/%%GRAEMLIN_URL%%/whistle.gif[/img]



J.Miskovic </div></div>

26 MP(Canadian)Gallon is 21 MP(US)G - believable for best ever - so I guess I'll have to call BS on your BS call.

;-)
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