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10-28-2006, 07:35 PM
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#1
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80,000+ Christmas Lights
Join Date: Aug 2006
Location: South of Boston, MA
Posts: 185
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PU Truck, tailgate up or down?
Best gas mileage, what do you think?
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125g show, (3) 250w, 75g frag, 40g sump
$100 325g ready to go to...just need more house
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10-28-2006, 07:36 PM
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#2
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Milkshake Man
Join Date: Jan 2005
Location: SW Florida
Posts: 9,641
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Well in my ranger i have noticed around town doesnt matter but highway tailgate down better.
This is my ranger different trucks will be different.
Tim
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10-28-2006, 07:47 PM
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#3
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moddin aint easy
Join Date: Apr 2006
Location: newnan, ga
Posts: 5,697
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this is gonna sound stupid, but on mythbusters, they addressed that one. and come to find out. tailgate up is better. with the tailgate up, it creates a pattern of air, that acts as a cushion forcing more air over the tailgate. with it down, the cushion wasnt there, and the air comming over the cab pressed down on the bed, causing the truck to run like it was carrying a heavy load. but like mentioned above. im sure all are different.
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ANDY
You don't stop laughing because you grow old, you grow old because you stop laughing. Which is ironic, because old people are hilarious.
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10-28-2006, 07:52 PM
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#4
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The Bitter Mod
Join Date: Apr 2005
Location: Atlanta
Posts: 5,420
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Quote:
Originally Posted by leveldrummer
this is gonna sound stupid, but on mythbusters, they addressed that one. and come to find out. tailgate up is better. with the tailgate up, it creates a pattern of air, that acts as a cushion forcing more air over the tailgate. with it down, the cushion wasnt there, and the air comming over the cab pressed down on the bed, causing the truck to run like it was carrying a heavy load. but like mentioned above. im sure all are different.
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LOL
That episode of Mythbusters is on right now. As Andy stated what they determined was tailgate down was actually the worst.
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We will teach our twisted speech
To the young believers
We will train our blue eyed men
To be young believers
Last edited by theplatypus; 10-28-2006 at 08:11 PM.
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10-28-2006, 07:55 PM
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#5
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80,000+ Christmas Lights
Join Date: Aug 2006
Location: South of Boston, MA
Posts: 185
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Yup. Mythbusters did this a 2nd time with a sophisticated flow meter to accurately measure the gas used
Tailgate down - 4% worse
Tailgate up OR Bed hard cover - Better
Mesh in place of tailgate - tailgate was removed - 5% better
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125g show, (3) 250w, 75g frag, 40g sump
$100 325g ready to go to...just need more house
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10-28-2006, 08:24 PM
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#6
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Oh no...not again!!!
Join Date: Feb 2004
Location: Colorado Springs
Posts: 5,490
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Read the same in a car rag a few years back...leave it up.
Besides I don't want your leftover Taco Bell trash flying out of there and hitting me behind me.
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Perry 
BCRS Plankowner
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10-28-2006, 08:25 PM
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#7
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Big Fishy
Join Date: Sep 2005
Location: appleton wisconsin
Posts: 587
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i saw that one.
tail gate up
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Mike
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10-28-2006, 08:51 PM
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#8
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Milkshake Man
Join Date: Jan 2005
Location: SW Florida
Posts: 9,641
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Well that may be true for that truck on myth busters but more and less you have to do a test for your own truck.
I get about 2 miles more per gallon highway tailgate down.
Tim
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10-28-2006, 08:59 PM
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#9
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Eat more PIE
Join Date: Mar 2002
Location: Florida Panhandle
Posts: 18,604
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Quote:
Originally Posted by Tim224DT
Well that may be true for that truck on myth busters but more and less you have to do a test for your own truck.
I get about 2 miles more per gallon highway tailgate down.
Tim
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Thats because all of your Taco Bell crap goes flying out and makes you much lighter. 
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Double your drive space. Delete Windows
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10-28-2006, 09:03 PM
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#10
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Milkshake Man
Join Date: Jan 2005
Location: SW Florida
Posts: 9,641
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Quote:
Originally Posted by Casey
Thats because all of your Taco Bell crap goes flying out and makes you much lighter. |
Tim
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10-29-2006, 05:47 AM
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#11
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Good boy
Join Date: Jan 2000
Location: Marietta, GA, USA
Posts: 7,883
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Quote:
Originally Posted by Phishnoob
Besides I don't want your leftover Taco Bell trash flying out of there and hitting me behind me.
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10-29-2006, 07:26 AM
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#12
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I've got the REEF rash!
Join Date: Nov 2004
Location: New Jersey
Posts: 26,410
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Quote:
Originally Posted by Tim224DT
Well that may be true for that truck on myth busters but more and less you have to do a test for your own truck.
I get about 2 miles more per gallon highway tailgate down.
Tim
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But did you do it on the same part of road at the same time and weather both time at the same speed.If no to any part of my question it won't be the same.wind tunnle is the only true test.
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10-29-2006, 08:18 AM
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#13
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Look deeply into my eyes
Join Date: Aug 2001
Location: Where's Dimples?
Posts: 11,220
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Tail gate up , and box covered . (Pace Edwards- roll top), When i got the the roll top cover installed, i check b4 /after mileage,,,THey were right , got close to 10% better mileage with the cover on. And the truck seems to ride a lot better without the open box to add turbulance.
THe up/down stuff i had heard a while back was, it really made no difference, up or down, what did help was to cover the box however, had something to do about the air getting in the box, and adding turbulance blowing around in the box,,and like i said, i can notice a difference in the ride, with the roll top open , or closed
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Jeff
ieSpell-Use it/learn it/live it.If you think you don't need it, you do!
http://www.iespell.com/
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10-29-2006, 09:40 AM
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#14
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Eat more PIE
Join Date: Mar 2002
Location: Florida Panhandle
Posts: 18,604
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ok I think Mythbusters had one on roll the windows up with AC on or roll windows down which one helps gas mileage????
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Double your drive space. Delete Windows
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10-29-2006, 09:49 AM
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#15
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Why I get nothing done...
Join Date: Jun 2006
Location: Beaverton
Posts: 2,960
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Quote:
Originally Posted by Phishnoob
Read the same in a car rag a few years back...leave it up.
Besides I don't want your leftover Taco Bell trash flying out of there and hitting me behind me.
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Hahaha, Taco Bell....
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