Thread Tools Search this Thread Display Modes
Old 08-02-2006, 03:55 PM   #29
Rivet Master
Jim Clark's Avatar
2012 28' International
Currently Looking...
New Orleans , Louisiana
Join Date: Apr 2002
Posts: 2,075
Images: 6
Originally Posted by dmac
Yes - I have driven long distances with the OD off. I have then tried OD on, and actually found the temp to drop a little. My tranny temp is also dependant on outside air temperature. Unless the tranny is hunting due to a long slight grade or headwinds, I advise OD on.

However, on the steep grades I was referring to... the truck never gets to 4rth, or even 3rd gear. It's in 1st or 2nd going up the steep incline of I-70 approaching the big tunnel in Colorado or going over the high passes. It heats up fast, rising to 210-215 (with outside temperatures of ~85). I stop at turnouts and let it idle to cool down before proceeding. It takes longer to cool down (15 min) than it takes to heat up (5 min).

Also, wind direction seems to play a huge role in gas mileage. With a moderate headwind (10-20 mph) I got 11.5 mpg, but with a tailwind I got 14 mpg.
I never tow with the OD on, and the rtuck runs cooler with the OD off. The tranny will climb in temp if I leave the OD on. I have found that once I let it get hot it takes a while to cool. I do not pull on the grades you do. I may start soon , I just returned from a meeting in which I was offered a postion in Denver. The next truck will be a 250.


Jim N5TJZ Air# 174
2012 International Serenity 28
2005 Safari 25 SS Traded
1968 Globetrotter Sold
2011 F150 Ecoboost
Jim Clark is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I pull a 1980 Ford Courier Pickup??? Snadi Airstream Motorhome Forums 3 04-19-2006 02:04 PM
Ford E 150 brunoffrance Tow Vehicles 23 10-27-2003 05:55 PM
towing Airsteams in the 1960s ??? oldvws Towing, Tow Vehicles & Hitches 35 03-27-2003 07:11 AM
5.9L Jeep to pull 29' Ambassador? MiamiMike Our Community 5 03-14-2003 01:35 PM
problem with Brakes jazzbone Brakes & Brake Controllers 33 08-23-2002 07:05 AM

Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:32 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.