Up Down or Off
#3
I believe Mythbusters did a episode on the subject. IIRC, they found doesn't matter whether it's up, down or off you won't get better mileage. It's because of the way the air flow over a truck. It's broken right behind the cab and doesn't flow smoothly over the rest of the truck like you would see with a car.
Edit : I guess me and the guy above were watching two different shows. I'm just about positive they found it did not matter. Never the less.... I doubt there's much difference. If there is one is very significant.
Edit : I guess me and the guy above were watching two different shows. I'm just about positive they found it did not matter. Never the less.... I doubt there's much difference. If there is one is very significant.
#6
I just did a search for that show and found this......
http://www.titantalk.com/forums/tita...e-episode.html
As these guys state.... a truck with the tailgate down ran out of gas 30 miles before the truck with it up. That's the show I saw ;-)
The bubble effect it what I was trying to think of that happens behind the cab.
http://www.titantalk.com/forums/tita...e-episode.html
As these guys state.... a truck with the tailgate down ran out of gas 30 miles before the truck with it up. That's the show I saw ;-)
The bubble effect it what I was trying to think of that happens behind the cab.
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#8
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I saw that episode....... Anyways, I drive 110 miles per day to and from work. I've tried both, and I NEVER saw a difference in mileage. I used a GPS to check the actual miles driven and a calculator to figure the mpg. (no such 'puter in my truck) So, the gate stays up. Besides, the truck looks way better with the gate closed/up......................
#12
Not sure about the newer trucks, but I've seen quite a few beds bowed in from the lack of support the tailgate provides. Look into the small spoiler off the 1500, supposed to help the flow from dragging down the tailgate and hitting the bumper, putting extra drag as well.