Very strange mileage observation - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-03-2012, 07:40 AM
Member
 

Join Date: Aug 2011
Posts: 43
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Very strange mileage observation

Hello,

I recently got back from a 1000 mile trip with our 2001 F350 7.3 PSD automatic and experienced something strange.

When accelerating extremely slowly, like when hauling a few loose eggs in the truck bed (read: babying it), I get 10.5 mpg and when accelerating fast, the mileage rises to at least 11.5 mpg. (semi-hand calculated by an iPhone app)

Shouldn't that be the other way around? Could there be something wrong? Any ideas?


Thanks for the info,
Mark


FYI: I was hauling a truck camper to get this kind of mileage.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 06-03-2012, 08:10 AM
Powerstroke.org Fanatic
 

Join Date: Sep 2009
Posts: 94
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Here is my theory with fuel mileage. The longer it takes to accelerate the vehicle the worse the milage will be.(to a certain degree). We get the best mileage when we are at our cruising speed. Not during acceleration. So when it takes say 15 seconds to get to 60 instead of say 10 seconds i think the milage will be worse. Again its just a theory.
Reply With Quote Quick reply to this message
  #3  
Old 06-03-2012, 06:47 PM
Compression Ignition Addict
 

Join Date: Sep 2008
Posts: 160
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
The truck will be more efficient under some boost.... let her get in a few lbs at least and I bet thats the best way to accelerate overall..
Reply With Quote Quick reply to this message
  #4  
Old 06-03-2012, 07:07 PM
Compression Ignition Addict
 

Join Date: Feb 2009
Location: Nacogdoches, TX
Posts: 11,009
Thanks: 0
Thanked 9 Times in 9 Posts
Feedback Score: 0 reviews
It's such a small variation especially semi hand calculated with too many other variables.
Reply With Quote Quick reply to this message
  #5  
Old 06-04-2012, 02:02 AM
Compression Ignition Addict
 

Join Date: Oct 2011
Location: Dover
Posts: 1,606
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I'm betting on a head wind for the 10.5 mpg! lol
Reply With Quote Quick reply to this message
  #6  
Old 06-04-2012, 03:15 AM
Compression Ignition Addict
 

Join Date: May 2010
Location: Raleigh, NC
Posts: 3,346
Thanks: 4
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Keep experimenting and see what you find. Like others said, that's a small enough difference that it's probably unrelated to your acceleration differences

Sent from my DROID BIONIC against my will
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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



All times are GMT -8. The time now is 01:51 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors