Dually MPG ??? - PowerStrokeNation : Ford Powerstroke Diesel Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 08-14-2009, 08:21 PM Thread Starter
PSN Local
 
Join Date: Jun 2009
Location: Dallas
Posts: 158
Dually MPG ???

Can someone tell me what size my tank is my truck is in my sig. I'm under the impression that its a 36 gallon. If thats the case then my gas mileage doesn't seem to good. I've only been able to get about 450 miles out of a tank thats a mix of hwy and city and if I'm doing my math correctly thats about 12.5 miles to a gallon. I don't lead foot it cause my tranny is questionable and I'm trying to hold on to it as long as I can.

Thanks
jgos929 is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 08-14-2009, 09:05 PM
PSN Veteran
 
06powerstroke's Avatar
 
Join Date: Feb 2009
Location: Santa Clarita, SoCal
Posts: 3,600
Re: Dually MPG ???

I would say 36 gallon. 12 doesn't sound that bad. I'm not actually sure what is expected with a 7.3. Your rear gearing will also affect it. 3.73, 4.11, 4.88. We have a 6.4 with 4.88's and it gets 10.5.

2006 F250 CC LB FX4 Lariat
ARP studs, SCT X3 IDP & Gearhead tuned, S&B CAI, straight pipe, FASS 150/180, FCDP solid uppipe, Dieselsite coolant filter
2.5" BTS leveling kit, 35" Xtreme A/T's on XD Hoss 18's, N-Fab prerunner bar w/ 3 9" Hellas
Pioneer double din, JL components, 3 10" Pioneer subs

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
06powerstroke is offline  
post #3 of 16 (permalink) Old 08-18-2009, 04:25 AM
PSN Veteran
 
secondarychaos's Avatar
 
Join Date: Apr 2008
Location: Grass Valley, CA
Posts: 2,448
Re: Dually MPG ???

You don't needs to know the size of your tank to get your mileage. take your mileage from fill up and top-off to the next fill up and top-off, and use the second fillup's gallons to find your mileage. that's the only thoroughly accurate way.

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.
secondarychaos is offline  
 
post #4 of 16 (permalink) Old 08-18-2009, 02:18 PM
Coming For You
 
"THE DEMIZE"'s Avatar
 
Join Date: Apr 2008
Location: hillsboro,ohio
Posts: 1,461
Send a message via Yahoo to "THE DEMIZE"
Re: Dually MPG ???

I have a 2000 ex cab dually with 3:73 and a 6 speed and I get a good 20 just puttin around

97 F-350 cc lb 4x4
Swamps,Carson,Beans,Unlimited
"THE DEMIZE" is offline  
post #5 of 16 (permalink) Old 08-18-2009, 10:48 PM Thread Starter
PSN Local
 
Join Date: Jun 2009
Location: Dallas
Posts: 158
Re: Dually MPG ???

Quote:
Originally Posted by secondarychaos View Post
You don't needs to know the size of your tank to get your mileage. take your mileage from fill up and top-off to the next fill up and top-off, and use the second fillup's gallons to find your mileage. that's the only thoroughly accurate way.
What???

I would think if you filled it up with 36 gallons ran it to E and filled it back up with close to 36 gallons then divided by your trip miles that would be the accurate way.
jgos929 is offline  
post #6 of 16 (permalink) Old 08-19-2009, 12:20 AM
PSN Veteran
 
06powerstroke's Avatar
 
Join Date: Feb 2009
Location: Santa Clarita, SoCal
Posts: 3,600
Re: Dually MPG ???

Quote:
Originally Posted by jgos929 View Post
What???

I would think if you filled it up with 36 gallons ran it to E and filled it back up with close to 36 gallons then divided by your trip miles that would be the accurate way.
No this is how it works. You fill up, drive say 500 miles. Then you fill back up, I will say 32 gallons just as a demonstration. Then you do 500/32 and you get 15.6mpg. See how that works?

2006 F250 CC LB FX4 Lariat
ARP studs, SCT X3 IDP & Gearhead tuned, S&B CAI, straight pipe, FASS 150/180, FCDP solid uppipe, Dieselsite coolant filter
2.5" BTS leveling kit, 35" Xtreme A/T's on XD Hoss 18's, N-Fab prerunner bar w/ 3 9" Hellas
Pioneer double din, JL components, 3 10" Pioneer subs

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
06powerstroke is offline  
post #7 of 16 (permalink) Old 08-25-2009, 12:10 AM
PSN Local
 
Join Date: May 2008
Posts: 78
Re: Dually MPG ???

For what its worth, although it is a moot point, I believe you probably have a 38 gallon tank.

early '99 converted to late '99 F-350 dually, 4x4, 4 door, long bed, 6 speed. Midwest transmissions 05+ zf-6 transmission with their short throw shifter and SB clutch. Rosewood 180cc singles with 80% nozzles, Termy modded 17* HPOP, International bellowed up pipes, fs-2500, DP Tunes.
calebgriffin31 is offline  
post #8 of 16 (permalink) Old 08-27-2009, 09:10 PM Thread Starter
PSN Local
 
Join Date: Jun 2009
Location: Dallas
Posts: 158
Re: Dually MPG ???

Quote:
Originally Posted by 06powerstroke View Post
No this is how it works. You fill up, drive say 500 miles. Then you fill back up, I will say 32 gallons just as a demonstration. Then you do 500/32 and you get 15.6mpg. See how that works?
What??? You just quoted me saying the same thing as your saying now.

Quote:
Originally Posted by calebgriffin31 View Post
For what its worth, although it is a moot point, I believe you probably have a 38 gallon tank.
Thanks that makes me feel even better
jgos929 is offline  
post #9 of 16 (permalink) Old 08-27-2009, 11:11 PM
PSN Veteran
 
secondarychaos's Avatar
 
Join Date: Apr 2008
Location: Grass Valley, CA
Posts: 2,448
Re: Dually MPG ???

you made it sound like you wanted to just use the size of your tank, which is inaccurate

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.
secondarychaos is offline  
post #10 of 16 (permalink) Old 08-27-2009, 11:19 PM
you want some of this?
 
smorris's Avatar
 
Join Date: Jul 2007
Location: Reidsville, NC
Posts: 2,922
Re: Dually MPG ???

What he is saying is , it makes no difference what size tank you have.
Just be sure you use the amount of gallons used since last fillup, and the miles driven since last fillup. The size of the tank matters not.
Whether you use 20 gallons or the full 38 or so gallons just use the actual number of gallons you put back in there.

Oh, and if its the factory tank it supposed to be 38, but I have put more than 40 in mine many times. 41 and a few times 42 gallons.
example "a"

drove 100 miles used 10 gallons of fuel= 100/10 = 10 miles to the gallon

example "b"

drove 400 miles used 40 gallons= 400/40 = 10 miles to the gallon
so you see the tank size doesnt matter at all.

2000 f-350 cc lb dually 4x4, BTS transmission
[email protected] 90 mph on MT mud tires and 8,000 #
coming soon--97 cc lb 4x4
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
smorris is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the PowerStrokeNation : Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome