Thread Tools Display Modes
Old 10-25-2014, 09:28 AM   #1
Junior Member
Join Date: Sep 2013
Location: Indianapolis, IN
Posts: 28
Increase Mileage w/Roof-Mounted Deflector

I rarely get 10 mpg, more like 8.5-9 mpg. If it wasn't for the tow/haul feature on my F150 the transmission would be constantly jumping between 4-5-6. I usually just lock out 6th gear, and the engine RPM is around 2,300. Can anyone comment from experience about using a wind deflector and the increase in mpg.

TV- F150 FX4
TT- MicroLite 23FB
Tent2TT is offline   Reply With Quote
Old 10-25-2014, 09:51 AM   #2
DW's Retirement Plan
DaGrinch's Avatar
Join Date: Sep 2013
Location: Western MD
Posts: 800
When I click on your link, it takes me to a wind deflector for a Mustang Convertible. So, I'll give my $.02 from what I experienced.

I made a roof deflector for my '04 Jeep Grand Cherokee out of Lexan and aluminum square tubing. I was pulling a '08 Rockwood Roo 23SS, about 5600# worth. Normally, I got about 12 or so mpg on a trip. Using the deflector to make a trip from Western MD to Myrtle Beach, I was pushing close to 14 mpg.
I've read all the other posts here and on other forums on the pros and cons of deflectors. Personally, I say try it and see if it works for you. On a short trip, 2 hrs or so, I don't think it would be worth it for me. However, on a long trip, it probably saved me close to a 1/2 tank of gas. And at gas prices, it was worth it in my book.

Let the nay-sayers chime in!!!!


"Sunny" the 2017 Sunseeker 3010DS
2006 Jeep Liberty Toad
.... and lovin' life...
DaGrinch is offline   Reply With Quote
Old 10-27-2014, 07:33 PM   #3
Join Date: Mar 2010
Location: Chalfont, PA
Posts: 686
The ones on semi's aren't for looks
2005 GMC Sierra 3500 SLT DRW 6.6 D/A
2013 Crusader 335BHS TE
EXGMTech is offline   Reply With Quote
Old 10-27-2014, 07:40 PM   #4
Senior Member
jimdd810's Avatar
Join Date: Sep 2014
Posts: 141
There is some merit to it. If the air is directed over the travel trailer. If it isn't it's just picking up speed and forcing it in to the trailer harder.

Life is a highway!!!!!
jimdd810 is offline   Reply With Quote
Old 10-27-2014, 07:50 PM   #5
Senior Member
jevanb's Avatar
Join Date: Dec 2012
Location: Michigan
Posts: 1,446
You problem is lack of HP. More of that and the trans will not hunt. The wind deflector is too far from the trailer to help any
2012 Wildcat 344QB

06 LBZ ,CC 4x
lots of mods
jevanb is offline   Reply With Quote

mileage, mount, roo, roof

Thread Tools
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

» Virginia Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

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 -5. The time now is 07:59 AM.