Mileage help! - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by ctjailer, this thread has received 10 replies and been viewed 957 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 02-19-2007, 10:33 PM Thread Starter
 
Join Date: Feb 2007
Posts: 8
Points: 153
Thanks: 0
Thanked 0 Times in 0 Posts
Mileage help!

Hi, I'm new to the world of diesels and bought a 2002, F250 S/D crew cab - 8 foot bed, auto trans (with OD) and 4 wheel drive (manual hubs) & 56,000 on the clock this past October. I realize that the mileage on this is never going to be phenominal, but I really expected better than I am getting. At best it has been 12mpg (all highway) and at worst 8.8 mpg (almost all city) with an overall average of 11.4 mpg. I'm pretty easy on the accelerator around the city and a huge user of cruise control on the highway. Not doing any towing right now, the truck has never been plowed.

I realize that winter mpg is poorer than summer but even if I allowed for 3 mpg increase in the summer it still isn't anything that I would write home about.

I supplement at each fillup with either Howes or Diesel Kleen.

Anyone got any comments, ideas or suggestions? I'm open to just about anything.
ctjailer is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 02-19-2007, 10:43 PM
The Oracle
 
BigRed97's Avatar
 
Join Date: Sep 2006
Posts: 343
Points: 21,315
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to BigRed97
start by checking your fuel filter and air filter, if either are dirty/clogged it will destroy your mileage

e99 leveled on 35s
250/80, modded s300, studs, springs, push rods, adrenaline, swamps tuning, racerx trans
BigRed97 is offline  
post #3 of 11 (permalink) Old 02-19-2007, 10:59 PM Thread Starter
Threadstarter
 
Join Date: Feb 2007
Posts: 8
Points: 153
Thanks: 0
Thanked 0 Times in 0 Posts
Recently had the dealership morons do the 60,000 service on it. I'll have to look and see what filters (if any) they replaced.
ctjailer is offline  
post #4 of 11 (permalink) Old 02-19-2007, 11:22 PM
The Oracle
 
BigRed97's Avatar
 
Join Date: Sep 2006
Posts: 343
Points: 21,315
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to BigRed97
take it easy we aren't all morons

e99 leveled on 35s
250/80, modded s300, studs, springs, push rods, adrenaline, swamps tuning, racerx trans
BigRed97 is offline  
post #5 of 11 (permalink) Old 02-19-2007, 11:24 PM
 
Join Date: Dec 2008
Posts: 1,870
Points: 11,988
Thanks: 0
Thanked 1 Time in 1 Post
Agreed, I have good friends who work at my Ford dealer.
BUT the dealer as whole is horrible.
Accomplished ripoff artists.

cjtailer, what size tires are you running and are these numbers hand-calcualated?
gregrob is offline  
post #6 of 11 (permalink) Old 02-20-2007, 01:24 PM
TDG MAFIA #94
 
StrokinSnyd's Avatar
 
Join Date: Sep 2006
Posts: 519
Points: 2,546
Thanks: 5
Thanked 0 Times in 0 Posts
Send a message via MSN to StrokinSnyd
if you plan on keeping your truck all stock, then that is about the average mpg. you will be seeing. Swap out the old air filter and add a 4" turbo back exhaust and expect to see your mpg. numbers jump up to arround 16-20 or so on the highway.

96 Dodge Cummins EC LB 5 spd big valve springs, full cut DV's, Big sticks, phat shaft turbo....yada yada yada.... plain and simple, it goes fast and pulls whatever
StrokinSnyd is offline  
post #7 of 11 (permalink) Old 02-21-2007, 03:23 AM Thread Starter
Threadstarter
 
Join Date: Feb 2007
Posts: 8
Points: 153
Thanks: 0
Thanked 0 Times in 0 Posts
Big Red - didn't mean to offend, but the ones who work at my local Ford dealership all appear to lean toward moronic (especially the service writers)
ctjailer is offline  
post #8 of 11 (permalink) Old 02-21-2007, 03:27 AM Thread Starter
Threadstarter
 
Join Date: Feb 2007
Posts: 8
Points: 153
Thanks: 0
Thanked 0 Times in 0 Posts
LocoMotion - The mileage is manually calculated (miles driven/galons used) I have a spreadsheet that calculated based on a tank to tank basis as well as a total cumulative average.

the tires are 285/75R16 Kelly Safari AWR
ctjailer is offline  
post #9 of 11 (permalink) Old 02-21-2007, 03:35 AM
 
Join Date: Feb 2006
Posts: 28
Points: 1,110
Thanks: 0
Thanked 0 Times in 0 Posts
Couple other things to look at. Winter blended fuels cut into milage a bit. If you are fairly North, then it's gonna be worse. Also, if you are North, is it possible that you have your front hubs locked? That'll cut into milage as well. Otherwise, the other guys are right on.
Aaron SEIA
Aaron SEIA is offline  
post #10 of 11 (permalink) Old 02-21-2007, 03:49 AM
 
Join Date: Dec 2008
Posts: 1,870
Points: 11,988
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by ctjailer
LocoMotion - The mileage is manually calculated (miles driven/galons used) I have a spreadsheet that calculated based on a tank to tank basis as well as a total cumulative average.

the tires are 285/75R16 Kelly Safari AWR
Have you taken into account the difference in tire size?
If not your numbers are off by almost 10%
gregrob is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com 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