dodge guy wrote:
Huntindog wrote:
dodge guy wrote:
Waxing the front will not increase MPG. Changing the profile will. I bought an old school wind deflector for my 11.5ft tall TT to put on the top of my Excursion. I was getting consistent upper 6 for mileage. With the addition of the deflector I gained approx. 1.2 mpg!!! For these to work properly they have to be as close to the trailer as possible and have the correct angle. They will not work on a pick up if put in the cab with a TT, maybe a fight wheel.
I've had it for a couple years now and it works very well. You can feel that the engine works less due to the decrease in wind resistance, and the bugs are 90% gone on the front of the trailer which shows how the wing works to push the air up over the trailer. I have a small 6" line of bugs on the very top edge of the trailer. Just for the heck of it on one trip I didn't use it and my mileage went back to the 6.8 range. So yes real world results are that they can work if sized and used properly.
OK, now here is the $100,000.00 question.
Do you wax the deflector?:B
Ooh! You got me! Yes I do. Maybe if I don't my mileage will decrease. Maybe I'll try it next trip! :B
I did the same thing with my excursion and the wind deflector increased my mileage . First trip out I found out how well it worked , the negative pressure sucked off my propane tank cover and it went over the trailer .( it was hard to remove by hand)