9mpg towing...normal I think? - Ford Powerstroke Diesel Forum
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Old 10-14-2011, 08:44 PM
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9mpg towing...normal I think?

Hey there, typically I don't fret too much over fuel economy as I figure there's not much I am going to do about it...still gotta drive. However I am slightly concerened for an upcoming trip. I intend to head out from Colorado up to the tetons, then head over to niagara falls, then to upstate NY, to the keys, then back home.

I tow skidsteers and pallets fairly often but I noticed towing my camper (2004 arctic fox 30u, bumper pull) my mileage is a lot worse, bout 9 going 75.

So my question is, is this typical, I am spartan tuned, and straight piped, thats all, oh and I am running 35'sx13 duratracs

Furthermore, I figure the best tune empty is the 275, towing I backed it down to the 210tp, is there a better option, the truck yanks the trailer just fine so I don't necessarily need the power more than I would like better economy.

And as much as I would like to just go slower I foresee I will want to go the posted limit as its a lot of miles

Thanks
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Old 10-14-2011, 08:52 PM
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Oh and thats not a hand calculated 9, the meter says 9 and change so I figure with the larger tires, and the fact that typically the meter is inaccurate its actually probably pretty close.
Last time towing it said 9.6
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Old 10-14-2011, 11:08 PM
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hmmm... I towed 9k up through the mountains a while ago and managed to get 12.3 hand calc'd on my 38's. I'm a 3.55 gear ratio though so maybe that has some contribution?
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Old 10-15-2011, 03:48 AM
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I am not sure if it is normal or not. I would say it is ball park if your truck were stock.
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Old 10-15-2011, 05:19 AM
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damn, I know this isn't as heavy as two skids but i towed a 1978 trans am for delivery from Sussex, NJ to Upstate VT and got 22.3 towing... That was with the lie o meter but i didn't go a hair over 55. RPMS were right around 2300.


Tom
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6.4 diesel
Edge CS Chip
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Old 10-15-2011, 08:30 AM
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i tow my 8-9000 lb travel trailer.....getting 350 miles to the tank so that is around 10....but im averaging 70-75 mph.......on my wild tune
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Old 10-15-2011, 08:34 AM
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Quote:
Originally Posted by tkobes43 View Post
damn, I know this isn't as heavy as two skids but i towed a 1978 trans am for delivery from Sussex, NJ to Upstate VT and got 22.3 towing... That was with the lie o meter but i didn't go a hair over 55. RPMS were right around 2300.


Tom
Truck-
2008 ford f250
6.4 diesel
Edge CS Chip
Tow Tune
DPF Delete w/ MBRP Cool Duals Straight Pipe \
WOW......you were getting 750 miles per tank? cause that would be 22 mpg.
that is amazing
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Old 10-15-2011, 11:12 AM
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And I thought I would also say that the trailer weighs aroun 8500 lb empty, and sits a touch higher than most, I think its more an issue of wind resistance at 75 than the weight, only reason i say this is because my skid with no attachments is right at 10,000 plus any attachments that are on the trailer, and the trailer itself is probably 3k ish but I am not sure and my mileage is better with the skid
Thanks for the input
For anyone wondering my egts were fine, and sometimes it would hit 40 psi going up some of the hills (trying to maintain 75 mph), is 40 psi sustained ok?
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Old 10-15-2011, 11:25 AM
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Just got done towing my 5th wheel 13,700# 1,800 miles on level roads at 63 - 68 mph. Best I got was 10 mpg. I have the egr delete, Banks inner cooler, high rise and turbo back 5" exhaust. Not towing I get around 18 - 19 mpg. Sure would like to get 12 mpg towing it would make a big difference in how far I go.
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Old 10-16-2011, 06:53 AM
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I live in the Pacific NW and travel frequently through the Cascades, Sierra's, and the Central Rockies. I get 9-10 hand calculated pulling 9K 5'er with an additional 700 lbs of extras in the bed. Typical average speed going up, down or flat on the interstate is about 70 mph. Maybe a little less on the US two lanes. MPG goes up to 11 at that point. All stock at this point. But looking for tuner with out DPF delete.




2010 F-350 4X4 CC LB Lariat 3.55 11.5K GVWR Nicely decortated
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