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Tail gate up or down for fuel economy

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Old 05-24-2011, 10:24 PM
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Saw this episode a few years back on a oval track, I think it was a Nascar track...

They also did the test to AC on AC off while driving.....

Who know's really.... but their results show'd tailgate down did nothing to improve fuel economy...idk

Same thing w/ AC and MPG...
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Old 05-24-2011, 10:41 PM
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Since we are talking mythbusting...

Is it less expensive to keep furnace at a constant temp or to turn it down 10 degrees while away or night then when returning or morning turning it back to normal?

I had seen an episode a few years back on leaving lights on or off. It was always less expensive to turn lights off then on no what the circumstance was....even if leaving the room for a split second. They even factored in cost of light bulbs burning out and replacing.
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Old 05-25-2011, 12:17 AM
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Originally Posted by Poker~N~Run View Post
its been proven over and over. Leaving it up creates a low pressure zone in the bed pushind air out and making truck more aerodynamic. Leaving it down creates turbulence low in the bed. watch a cup in the back as you drive. It will slowly move around and then if it gets higher gets sucked out fast. That is the low pressure area in the bed acts like a bubble.

Bingo, just like air going over an airplane wing.
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Old 05-25-2011, 12:44 AM
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Originally Posted by BBADWS6 View Post
IMO, keep it up. Bedcovers are not suppose to help any either!
Depends on the truck. Deisel Power did a test of all truck brands with the bedcover and Dodge won with 1 1/2mpg more.
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Old 05-25-2011, 02:26 AM
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get a net, airflow and tailgate at the same time.... next!!
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Old 05-25-2011, 05:08 AM
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Mythbusters is TV, not science.

Keep your tailgates up.

Kevin Cooper from the National Research Council of Canada has a good technical paper on this subject (SAE 2004-01-1146) Here's a summary of the paper - http://www.nrc-cnrc.gc.ca/eng/news/n...down-myth.html
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Old 05-25-2011, 05:53 AM
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Road and Track (or Car and Driver...I forget which one) did a study and they concluded tailgate up. It was a few years back but I remember the study since I drive a pick-up as my main vehicle.
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Old 05-25-2011, 09:07 AM
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Just trying to save more money to bouild a faster boat Mike. Got to catch you!
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Old 05-25-2011, 12:18 PM
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Just trying to save more money to bouild a faster boat Mike. Got to catch you!
buy a Yugo
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Old 05-25-2011, 01:27 PM
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The last time I checked, driving in Fla with the gate down will get you a ticket.
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