More MPH = More MPG? - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 6 (permalink) Old 02-23-2008, 06:48 PM Thread Starter
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More MPH = More MPG?

I think you'll enjoy this one Dave. This guy must have been drunk or his speedO was WAAAAAAAAAAAAY off.

http://www.thedieselstop.com/forums/...46/index2.html

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i have noticed with my truck, the faster i go on the highway, the better mileage i get. for example at 65 i get roughly 17-18. if i bump it to 70 its gets 19-20. but then another jump at 80 to about 21. one long drive thru west texas got me 23-24 going 85-90. around town it is about 15 or 16 depending on how easy i drive it.
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94 7.3 IDI non-turbo XL 350 super cab long bed
autojet y pipe and a used p-stroke exhaust on the end of it 235xxx miles, amsoil full bypass system, coolant filter
This might be the true problem right here though...(quoted right from his own sig)
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probally the youngest member of the tds


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And remember, he's cat rebel....he doesn't do it the normal way.
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post #2 of 6 (permalink) Old 02-23-2008, 07:23 PM
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Re: More MPH = More MPG?

My Fil get 20 in his.I found a 86 auto 4X4 6.9 for 1k in the paper yesterday I might scoop it up.


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post #3 of 6 (permalink) Old 02-23-2008, 07:47 PM
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Re: More MPH = More MPG?

It has been a long time since I was in west Texas and not to offend any Texans since that was my second home while I was growing up, but doesn't the wind always blow through that section of Texas? If it does he just might of gotten a great tail wind to where he could of shut off the engine riged a sale and off he would go.

Jim

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post #4 of 6 (permalink) Old 02-24-2008, 02:11 PM
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Re: More MPH = More MPG?

Must be an advantage the earlier trucks had over mine because up to 60mph is my best mpg and after that it goes down fasssst

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post #5 of 6 (permalink) Old 02-25-2008, 06:06 AM
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Re: More MPH = More MPG?

I guess there is technically a way that MORE MPH=MORE MPG... And the only way is if you are driving around at lower speed lower gear... Optimallly you want to be on your highers gear for best fuel economy... so probably if you do 50 and you are in 5th gear (and don't want to shift... ) you get worse than 55 in 6th (for some strange reason you only shift at 52.69876 MPH....

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post #6 of 6 (permalink) Old 02-25-2008, 07:07 PM
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Re: More MPH = More MPG?

Quote:
Originally Posted by INFOCUSHAULER View Post
I guess there is technically a way that MORE MPH=MORE MPG... And the only way is if you are driving around at lower speed lower gear... Optimallly you want to be on your highers gear for best fuel economy... so probably if you do 50 and you are in 5th gear (and don't want to shift... ) you get worse than 55 in 6th (for some strange reason you only shift at 52.69876 MPH....
My 250 will shift into OD at around 45mph.

Best possible fuel mileage would be at 45-50, after that it geos down...period.

-Shawn Collister #16

-2002 F250 Crew/4x4/Auto- 4" Magnaflow, AIS, Vegistroke, ScanGauge, AC's tuned by Swamps

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