Diesel Forum - TheDieselStop.com - View Single Post - Do I tow with O/D off ?
Ford Diesel Forum / Powerstroke Forum
Ford Diesel Forum / Powerstroke Forum
Go Back   Diesel Forum - TheDieselStop.com
TheDieselstop.com is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
View Single Post
Old 11-22-2008, 11:20 AM   #9 (permalink)
SmokeyWren
Lifetime Supporting Member
 
SmokeyWren's Avatar
 
Join Date: Apr 1999
Location: Midland County,TX, USA
Posts: 36,342
My Photos: (44)
Quote:
Originally Posted by Stretch56 View Post
I'am one that keeps the speed down, about 57, helps save the fuel.
But you're wasting fuel when towing with the OD turned off.

A coupla years ago I did a test. 8,000 pound 5er trailer plus 2,500 pound tag trailer, cruise control set at 62 MPH (1,800 RPM in OD, 2,350 RPM with OD locked out), calibrated speedo. Filled with fuel until liquid diesel at the cap. Towed 350 miles to Dallas going downhill with the wind behind me and with OD locked out. Filled to the cap again. Less than 10 MPG.

Towed 350 miles back home, up hill and with a headwind, same load and same 62 MPH, but used the overdrive everywhere except climbing Ranger Hill. Filled to the cap again to be certain my MPG calculations were good. Over 12 MPG.

So at least on that trip I got 20 percent better MPG using overdrive everywhere I could.
SmokeyWren is offline   Reply With Quote
 
» Featured Product
» Log in
User Name:

Password:

Not a member yet?
Register Now!

» Auto Insurance
» Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 05:56 AM.



Powered by vBulletin® Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.