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1st time pulling fuel mileage

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Old Nov 3, 2010 | 02:41 PM
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1st time pulling fuel mileage

I just purchased a 24' toy hauler to pull with my 06 6.0 super duty, pulled awsome but the mileage went from 19 on the highway to 8 mpg, I didnt realize it would that much of a drop although I live in an area with big grades so my foot was on the floor several times, is there anything to help power/ mileage? Im thinking of an intake and exhaust.
Im afraid of a tunner beacuse I dont want to toast my tranny.
 
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Old Nov 3, 2010 | 06:09 PM
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Originally Posted by oughtsixbigred
I just purchased a 24' toy hauler to pull with my 06 6.0 super duty, pulled awsome but the mileage went from 19 on the highway to 8 mpg, I didnt realize it would that much of a drop although I live in an area with big grades so my foot was on the floor several times, is there anything to help power/ mileage? Im thinking of an intake and exhaust.
Im afraid of a tunner beacuse I dont want to toast my tranny.
Driving style can make a huge difference in mileage and often is a cheaper way to increase mpg than adding things. No matter how you slice it, however, towing what aerodynamically amounts to a barn door down the road kills mileage. I get 10-12 with my 7.3 and that is taking it very easy on the grades. Once you get rolling it is all wind resistance. Toss in some grades and it gets harder still!


Steve
 
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Old Nov 3, 2010 | 09:28 PM
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I get around 16 MPG on the highway running empty, but that drops to 8.5 towing the travel trailer. That is an average calculated after towing through the mountains and flat deserts of southern Arizona. What you are seeing is pretty normal. A few years ago gas got up over $4 a gallon here and while it was that high you could buy a current model year trailer for about 40 cents on the dollar on Craigslist.Trailers aren't cheap, any way you slice it.
 
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Old Nov 4, 2010 | 12:16 AM
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I find that if you can keep your speed below 65mph, you can gain some mileage. Large tires, lifts, and speed kill mileage. I tow a 14k fifthwheel, with a stock 05 SD 6.0/auto 4x4, depending on terrain and weather, I get 10-11.5mpg. Empty I get between 18-20mpg, depending on weather and distance (farther the better).

Good luck
 
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Old Nov 4, 2010 | 07:48 AM
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Originally Posted by c.f.moore
I find that if you can keep your speed below 65mph, you can gain some mileage. Large tires, lifts, and speed kill mileage. I tow a 14k fifthwheel, with a stock 05 SD 6.0/auto 4x4, depending on terrain and weather, I get 10-11.5mpg. Empty I get between 18-20mpg, depending on weather and distance (farther the better).

Good luck
09 F150 5.4 4x4, 13 towing 10K fiver, 22mpg empty.
 
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Old Nov 4, 2010 | 08:45 AM
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I get around 7-9 mpgs towing my 5er. Has a high profile on it. I usually run at 65 and set the cruise control

that is around 18-1900 rpms on the flats.
 
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Old Nov 4, 2010 | 10:17 AM
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I found @ 63 mph Im running 1750rpm w/15psi boost, my mileage is 10ish, if I push 65 I run 2500rpm w/25psi on the flat and 7-8mpg
 
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Old Nov 5, 2010 | 08:11 PM
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Originally Posted by oughtsixbigred
I just purchased a 24' toy hauler to pull with my 06 6.0 super duty, pulled awsome but the mileage went from 19 on the highway to 8 mpg, I didnt realize it would that much of a drop although I live in an area with big grades so my foot was on the floor several times, is there anything to help power/ mileage? Im thinking of an intake and exhaust.
Im afraid of a tunner beacuse I dont want to toast my tranny.
Yep 7 to 12 depending on…
Head/tail wind, hills and speed
<O</O
Here are a few things that might help.
<O</O
Keep your RPM at 1800 to 2000
<O</O
Get a head start on the hills
Build up your speed on the way down
Don’t make it a point to be doing 60, or 70 by the time you get to the top
<O</O
Don’t use your cruse control UNLESS the road is
VERY VERY flat!!
<O</O
Try to keep it in high gear as much as possible
Sounds easy it’s not
<O</O
BUT
Watch your EGT’s if you keep the RPMs in the 1800 to 2200 range climbing you can reach 1200* + in a hurry.
That’s when it’s time to forget MPG, it’s time to get those RPMs UP
<O</O
An intake isn’t going to help but a 4” turbo back exhaust will.
Maybe .5 all the time MAYBE, it’ll never pay for itself but it will lower your EGTs.
<O</O
One other upgrade you need is harpooning your tank. Without a doubt the BEST bang for the BUCK.
https://www.ford-trucks.com/forums/259149-harpoon-the-tank.html post #8
<O</O
I frequently put 27 to 29 gallons in my 27 gal tank which means I had 3 or 4 gals still in the tank
More harpoon info/testimonials
https://www.ford-trucks.com/forums/search.php?searchid=2808750

ab
 
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Old Nov 5, 2010 | 09:13 PM
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albran - that outlines how I drive almost to a T. It does make a difference "feathering" the throttle and holding higher gears. Stomping on the throttle is one way to surely kill the mpg's (and burn regens faster, not on the 6.0 but the 6.4 or later).

Not to hijack, but whats the best way to keep an eye on the temps? Can we just plug in to the OBDII or does a pyro have to be installed separate from the truck's sensors?
 
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Old Nov 6, 2010 | 06:43 AM
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I use the cruise control myself.
 
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Old Nov 6, 2010 | 12:06 PM
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WOW, good stuff, I will use your input, what is a good way to monitor EGT's? You mentioned to get RPM's up to cool them down, wont that make them hotter?
 
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Old Nov 6, 2010 | 01:18 PM
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Dropping a gear will flow more air and drop EGTs. I monitor off the OBDII. If you are towing, I think monitoring the tranny and EGTs by some means is an essential.

My opinion,

Steve
 
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Old Nov 9, 2010 | 04:45 PM
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Good info, gauges are a must, If you try to hot rod up a hill your EGTs get hot fast and with out gauges your motor will flat out work its self to death.
My 02 7.3 got about 9.5 mpg loaded with a gooseneck and two jeeps loaded, not to bad for the diesel.
 
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Old Nov 9, 2010 | 06:48 PM
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One thing I didn't see mentioned, is make sure you are using Tow/Haul mode. Assuming you have the auto tranny.

A 6.0 won't give you EGT from the OBD. You will need a probe if you choose to add that gauge. I recommend the Edge Insight product line. It is an OBD monitor, but has an extra port for an EGT proble.

Study the 6.0 diesel engine forum to discover why monitoring the engine coolant and oil temps are the most important thing that you must do. OBD is perfect for that.
 
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Old Nov 12, 2010 | 02:18 AM
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I tow a 24' travel trailer with my rig (see sig for info). I get about 12 - 14 MPG towing the trailer.
 
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