Notices

Real world MPGs?

Old 11-13-2011, 09:26 AM
  #61  
Senior MemberCaptains Club MemberPLEDGER
 
Join Date: May 2003
Location: New Braunfels, Tx
Posts: 8,763
Thumbs up

Originally Posted by ReelJoy View Post
That is a significant cost savings. Guess I'm learning the hard way buying direct from Ford. Thanks for the tip.
Yes you are... Get the big 2.5 Gallon containers at any truck stop, $12-15 per.

Holds 5 gallons if I recall correctly.


Updated information -

Just hit over 19k miles on my 6.7L and hanging right at 16.5 daily driving, 15 miles each way but it's the sitting in traffic that kills it. Sure it would be 17-18 MPG if I wasn't sitting there idling for 10-20 minutes every morning.

Running 70 and it's hitting 18.5+ however I normally run 80ish and average 16-17 (turbo is spooled up a little). I'll tell ya what, that 6.7 is ready to run at 80. Put your foot down and it will peg the limiter in nothing flat!

How do I know? I was getting on the highway in Dallas a while back and since everybody hauls ass up there anyway didn't realize I was going *that* fast. Anyway, hit 95 and the power sort of backed off. Curious so I tried it again, 95 MPH and it hangs there - trust me it's raring to go in a hurry! Good thing it's there too, as I would have rolled up past the century mark and not even noticed. Smooth...Not!
ReelWork is offline  
Old 11-13-2011, 10:06 AM
  #62  
Senior Member
 
Join Date: Oct 2009
Posts: 177
Default

Ford F250 7.3 power stroke ave city or hwy mpg 13 about 10mpg towing 5000 boat but i think thats because i take it out of over drive 175k runs like new have had very few problems with truck..
alnuts is offline  
Old 11-14-2011, 03:44 AM
  #63  
Senior MemberCaptains Club Member
 
Join Date: Jun 2006
Location: Diamondhead, MS
Posts: 3,954
Default

Originally Posted by Marek View Post
Jassman
How come you bought a Dodge this time ? How have the Fords held up so far ? Looking at dumping my 6.0 and trying the new 6.7 or buy another Duramax. Bought a 2011 for the guys last year and it has been a nice truck so far.

The 350 is my personal truck..She has larger tires..35.5's...and I just put twin Rancho steering stabilizer shocks and 4 Rancho 9000 adjustable shocks..man, what a difference..truck has 34k and best truck Ive owned from Ford..

The 11 250 is bone stock and gets used as a hot shot delivery truck, thats why the high miles..around 93-94k...not one problem, the dealer services everything..Im shooting for 300k on this truck..so far so good.

The 11 GMC 2500 is my partners..he's 48, and drives like he's 75...so he can try and beat me on the mileage game...

The new Dodge has been awesome..I bought this from the dealer I mostly haul cars for..He's been good to me, and for the last 2 years Ive been pulling his trailer around with my Ford dually's ..it was about time I stepped up to the plate..and bought a Dodge. I ordered the HO version long trail..great truck, will know more once I and the guys put some miles on her.
Jassman is offline  
Old 11-14-2011, 05:48 PM
  #64  
Junior Member
 
Join Date: Jun 2011
Posts: 5
Default

Originally Posted by wardmarine View Post
2008 ford f250 diesel auto 4x4 driving 70mph no tow i get 19-19.5 towing 13.5k 33' hydrasport i get 10.5
Thinking this isn't a stock truck what have you dune to it? I'm getting around 9 to 11 per the dash which is about 2 MPG higher then what it gets if you do the math.
newbigboater is offline  
Old 11-15-2011, 08:42 AM
  #65  
Senior Member
 
Join Date: Mar 2009
Location: Homosassa, FL
Posts: 1,431
Default

I never saw less than 15 mpg or more than 16 mpg pulling my Grady 226 with a '99 Dodge short bed with the Cummins. 5 speed trans and 3.55 rear end make a big difference. Florida is also flat. I never ran faster than 62 mph.

I just replaced that truck with a 2500 Duramax. I pretty sure that I'll never see that kind of mileage again with the automatic trans and all of the pollution control stuff.

I got only $8000 for the Dodge with 140,000 miles on it. So deals are out there for trucks that will get you 15 mpg.
DocStressor is offline  
Old 11-15-2011, 06:53 PM
  #66  
Senior Member
Thread Starter
 
Join Date: Nov 2008
Location: Wilmington, NC
Posts: 485
Default

Got a dumb question - Is the rear end gear ratio posted on the truck and if so, where can I find it?
venison is offline  
Old 11-16-2011, 06:53 AM
  #67  
Senior Member
 
Join Date: Feb 2009
Location:
Posts: 925
Default

Originally Posted by FredRog72 View Post
For some reason around town it does better on fuel if you accelerate off the line faster rather than baby it.
That's interesting - I did the same experiment and found exactly the same results with my Dodge to the tune of a 1 mpg increase over the course of a full tank![/quote]

I saw some research a while back that found the best mpg occurred when accelerating from a stop at 3/4-throttle, with the idea that you got into top gear quicker and into a more-efficient operating range. Of course, that was with moderately-powered vehicles. Maybe it is more like half-throttle with these higher-powered vehicles.

Had a '92 Dakota 2wd w/ 318 (oops, I mean 5.2L (my age is showing!)) that averaged 17-18, and I once got 23mpg driving from Texas up to Colorado - think the engine computer was temporarily fooled into running a lean condition with the higher altitude.

My '02 Accord gets 31-32 around town, and 40 on long trips at 70-75mph with A/C on and loaded with luggage, all hand-calculated, but that is a car with a 4-cyl and 5-spd, so it doesn't apply to this thread.
longboat is offline  
Old 11-16-2011, 07:48 AM
  #68  
Senior MemberCaptains Club Member
 
Join Date: Feb 2001
Location: Mobile, AL USA
Posts: 1,862
Default

Originally Posted by venison View Post
Got a dumb question - Is the rear end gear ratio posted on the truck and if so, where can I find it?
On my F250 it is listed on the capacity tag posted inside the driver door. My tag lists the axle as C1, which translates to 3.73 limited slip.

31 — 3.73 non-limited slip, F-250/Excursion
32 — 4.10 non-limited slip, F-250
41 — 3.73 non-limited slip, F-350
61 — 3.73 non-limited slip, F-350
73 — 4.30 non-limited slip, F-450
75 — 5.38 non-limited slip, F-450
78 — 4.88 non-limited slip, F-450
81 — 3.73 non-limited slip, F-350
88 — 4.88 non-limited slip, F-350
95 — 5.38 non-limited slip, F-550
98 — 4.88 non-limited slip, F-550
C1 — 3.73 limited slip, F-250/Excursion
C2 — 4.10 limited slip, F-250/Excursion
C3 — 4.30 limited slip, F-250/Excursion
285exp is offline  
Old 11-17-2011, 12:46 AM
  #69  
Senior MemberCaptains Club Member
 
Join Date: Dec 2007
Location:
Posts: 11,182
Default

on a GM truck they used to list the gear ratio on a sticker in the glove box. Not sure if they still do.
Back-in-Black is offline  
Old 11-17-2011, 06:01 AM
  #70  
Senior Member
 
Join Date: Sep 2005
Location: ZEPHYRHILLS FL
Posts: 971
Default

Originally Posted by Back-in-Black View Post
on a GM truck they used to list the gear ratio on a sticker in the glove box. Not sure if they still do.
If it's a 2500/3500 DURAMAX it's an easy answer, 3.73 as that is what ALL of them come with. If it is a gasser, look in the glovebox for teh RPO code list. The common ones are GU6=3.42, GT4=3.73, and GT5=4.10 and if it has G80 there it means it has a limited slip differential. If you don't have one of those 3, then search RPO codes and look through the list until you find your axle code.
thefermanator is offline  
Old 11-17-2011, 06:26 AM
  #71  
Senior Member
 
Join Date: Aug 2011
Location: Chester Maryland
Posts: 331
Default

My guy is getting 11-12 pulling a 26 edgewater cc down to FL right now. He is maintaining 60 to 65mph. This is on a 2004 3500 Dually Dodge 5.9L. I have a 2010 F250 and it gets the worst fuel mileage out of all of my trucks
abs1629 is offline  
Old 11-30-2011, 10:43 AM
  #72  
Senior Member
Thread Starter
 
Join Date: Nov 2008
Location: Wilmington, NC
Posts: 485
Default

Just test drove a 2011 F250 6.7 diesel with 23k miles on it. Put about 50 miles on it at probably 45%/55% cty/hwy. When we got back to the dealership the dashboard read 21.6 average mpg. Pretty impressive in my book. It also road much much smoother than my current '06. Going to try out the Duramax next...
venison is offline  
Old 11-30-2011, 10:59 AM
  #73  
Senior MemberCaptains Club Member
 
Join Date: Jan 2007
Location: Erie, Pa
Posts: 1,077
Default

Venison, I know you drove a ford but if the computer on a ford is anything like my dodge you will hand calculate 16.8-17. Thats what I get with a 2005 cummins.
sammi is offline  
Old 11-30-2011, 11:22 AM
  #74  
Admirals Club Admiral's Club Member
 
Join Date: Aug 2010
Location: Georgetown, SC
Posts: 343
Default

As sammi said I wouldn't go by what that computer tells you. We commonly refer to it as the "Lieometer". Out of all the diesel trucks I know my dads is actually accurate and it's the only one. They usually range from 1.5 - 4 MPG off depending on driving conditions but usually 1.5 - 2 MPG high is what they read.
Lake Murray Viper is offline  
Old 11-30-2011, 11:37 AM
  #75  
Senior Member
 
Join Date: Nov 2009
Location: Orange Beach, AL
Posts: 224
Default

2011 Ford F350 single rear wheel 17.5 to 18 mpg every day
fastdonzi is offline  
Old 11-30-2011, 10:37 PM
  #76  
Senior MemberCaptains Club Member
 
Join Date: Mar 2002
Location: Pensacola, FL
Posts: 5,156
Default

Originally Posted by Lake Murray Viper View Post
As sammi said I wouldn't go by what that computer tells you. We commonly refer to it as the "Lieometer". Out of all the diesel trucks I know my dads is actually accurate and it's the only one. They usually range from 1.5 - 4 MPG off depending on driving conditions but usually 1.5 - 2 MPG high is what they read.
Mine is consistently 1.4-1.5mpg higher than what I hand calculate. It says 16.5 and I get 15.0.
DreamWeaver21 is offline  
Old 12-03-2011, 01:50 PM
  #77  
Senior MemberCaptains Club Member
 
Join Date: Nov 2003
Location: San Diego
Posts: 4,683
Default

Originally Posted by venison View Post
Just test drove a 2011 F250 6.7 diesel with 23k miles on it. Put about 50 miles on it at probably 45%/55% cty/hwy. When we got back to the dealership the dashboard read 21.6 average mpg. Pretty impressive in my book. It also road much much smoother than my current '06. Going to try out the Duramax next...
I drove one for two months, it was about 14 MPG average
doughnut is offline  
Old 12-07-2011, 06:59 PM
  #78  
aln
Senior Member
 
Join Date: May 2004
Location: West America
Posts: 3,642
Default

I just found out something shocking last week. I was on a long fairly level stretch going 65 when I reset the computer to track mpg's. In a 2003 Murano, I was averaging 22.5 mpg at 65 mph for 25 miles. I slowed to 60 and repeated the exercise. The computer consistently gave reading between 26.5 and 27.3 mpg over about the same distance and terrain. I thought maybe 1 or 1.5 mpg difference would show up or noise level but was surprised to see a significant difference from 65 to 60. The Murano is a brick too.

I am going to test it again to verify the results I just got. It's making me think the true mpg is more dependant on auto shape, terrain, speed and driving habits more than any particular make or model of car.
aln is offline  
Old 12-08-2011, 12:42 PM
  #79  
Senior MemberCaptains Club Member
 
Join Date: Nov 2003
Location: San Diego
Posts: 4,683
Default

Originally Posted by aln View Post
I just found out something shocking last week. I was on a long fairly level stretch going 65 when I reset the computer to track mpg's. In a 2003 Murano, I was averaging 22.5 mpg at 65 mph for 25 miles. I slowed to 60 and repeated the exercise. The computer consistently gave reading between 26.5 and 27.3 mpg over about the same distance and terrain. I thought maybe 1 or 1.5 mpg difference would show up or noise level but was surprised to see a significant difference from 65 to 60. The Murano is a brick too.

I am going to test it again to verify the results I just got. It's making me think the true mpg is more dependant on auto shape, terrain, speed and driving habits more than any particular make or model of car.

Winner Winner Winner. MPG is effected expotentially by vehicle speed ( Aero drag) etc
doughnut is offline  
Old 12-08-2011, 01:24 PM
  #80  
Senior MemberCaptains Club Member
 
Join Date: Apr 2005
Location: Houston, Tx
Posts: 894
Default

I have a 2007 GMC 2500HD 4x4 LBZ. Just last week, I pulled an empty 2700 pound boat trailer from Houston to Miami. We cruised at 75mph only stopping to refuel. Resetting the OBC on the first tank, we averaged 15.3mpg. On the way back after adding 16,000 pounds of boat to the trailer, we reset the OBC and cruised at 60mph. Averaged 10.2mpg. 1200 miles each way
teckersley is offline  

Thread Tools
Search this Thread