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diesel_doberman
12-28-2013, 12:49 AM
Has anyone gone from a 26-32 foot bumper pull to a 40-42 ft toy hauler? What was the difference in fuel mileage? I get 14 in my f350 with my 28ft bumper pull. Was wondering what others get. Thing larger toy hauler in the future.

MCTalley
12-28-2013, 12:59 AM
Not quite a toy hauler, but we have a 40' Big Country that, fully loaded, runs around 15,500lb. Our 2013 F350 (6.7 diesel) gets between 9.5 (windy) to 11 (calm) mpg running 65 mph on the interstate. When you switch to a fifth wheel, you'll probably lose more mpg due to increased wind resistance than you will to additional weight (at highway speeds, at least).

caissiel
12-28-2013, 08:25 AM
Towing our 39ft BC takes less power at 60mph then towing a 30ft one slide TT.
I tow our BC at 40-60% load all day long. My friend TT was no load until 40mph but beyound that the wind drag felt awful while the gauge stayed at 60% load on level Florida highway.
I have G tires and always say that is the best for fuel mileage while the TT had LR D tires that caused part of the drag.
My 3500lbs service trailer I use every summer is sometimes harder on fuel loaded then my BC.
I use a scangauge for fuel economy and believe that results are as accurate as any others.
BTW keeping turbo pressure under 10 PSI while towing has netted me 15mpg towing from Richmond VA to Miami FL. No way I could do that without G tires.
The side wind affect the fuel consumption more then head wind for my BC. When it happens I slow down to 55 to keep 12 mpg rate.

Sent from my LG-LS720 using Tapatalk

porthole
12-28-2013, 10:33 AM
Has anyone gone from a 26-32 foot bumper pull to a 40-42 ft toy hauler? What was the difference in fuel mileage? I get 14 in my f350 with my 28ft bumper pull. Was wondering what others get. Thing larger toy hauler in the future.

Went from a 30' bumper TT to a 36' toy hauler.
Mileage was about the same as long as the speed was ket at 55 or less.

That change was when I had a 2006 GMC 2500HD.
Mileage with the toy hauler was almost the same when switching from the 06 GMC to the 2011 F-350 DRW, slightly less most of the time.

The mileage really dropped after one of Ford's "updates". A 20% drop when towing. 11.5 - 12 mpg before, 9-9.5 afterthe update I did not want.

diesel_doberman
12-28-2013, 10:37 AM
I have a few mods on the truck now that took the none tow mpg from 12 to 16 and when rolling on the highway I got 20 from Cincinnati to Hilton head.

I was just hoping that the mpg would stay around 13 when Getting a larger new camper.

HornedToad
12-28-2013, 12:28 PM
From a 32 ft TT 9000 lbs wet to a 38 ft TH 13000 lbs wet with a V 10 F 250 no change in 7-8 MPG


.

The mileage really dropped after one of Ford's "updates". A 20% drop when towing. 11.5 - 12 mpg before, 9-9.5 afterthe update I did not want.

9 MPG with F 350 6.7...

Did the dealer flash your computer when you had it in for service???

scottyb
12-28-2013, 12:36 PM
Towing fully loaded 4100 (2K in the garage and full water tank) with 6.7L DRW, 8.5 mpg on level ground, no wind. 7.0 mpg in hills or with moderate head wind. I got 9.0 once with a tail wind.

ramdually4100king
12-28-2013, 01:13 PM
Not a bumper pull but I was getting 10 mpg towing a 10k pound, 34' 5th wheel. When we upgraded to a18k pound 44' 4100 I still get 10 mpg. But I only get 13 mpg when not towing thanks to the EPA restrictions.

diesel_doberman
12-28-2013, 01:50 PM
Thanks for the responses, I appreciate it.

My truck is a 6.4l power stroke with exhaust, dpf removal, tuner and intake. I will be getting a snow coolest system to help with the mpg next.

ILH
12-28-2013, 03:22 PM
Mine's a 35ft toy hauler. With my diesel I generally get between 10 and 13mpg - depending mostly on how full my wife has packed the RV!

westxsrt10
12-28-2013, 04:31 PM
Thanks for the responses, I appreciate it.

My truck is a 6.4l power stroke with exhaust, dpf removal, tuner and intake. I will be getting a snow coolest system to help with the mpg next.

If you're getting 14mpg with a 6.4L pulling a loaded 28' TT that's great! Your mods must be helping. I'd expect 10-12 mpg with the loaded toyhauler. (9 mpg being normal)

Sandpirate69
12-28-2013, 07:14 PM
My toyhauler is a bit longer at apprx. 38' . I have numerous mods on my truck all the way to EFI Live with a custom 100 hp tow tune w/exhaust brake. I just avg. 11.5 mpgs to Maggie Valley, NC. at 65 mph.

Sent from my GT-P5113 using Tapatalk

rgwilliams69
12-28-2013, 07:24 PM
Towing fully loaded 4100 (2K in the garage and full water tank) with 6.7L DRW, 8.5 mpg on level ground, no wind. 7.0 mpg in hills or with moderate head wind. I got 9.0 once with a tail wind.

My setup is the same, and mileage pretty close to yours Scotty. 8.5mpg is my average, although I've gotten as good as 10.5 and as bad as 6mpg (very bad head wind, fully loaded). In the summer when there is no wind I'm closer to 9mpg. Very heavy load that 4100 all loaded up. I was wondering if we put one of those big-rig trailer tails on, maybe we could get all the way up to 9.5mpg average. :)

scottyb
12-28-2013, 08:06 PM
My setup is the same, and mileage pretty close to yours Scotty. 8.5mpg is my average, although I've gotten as good as 10.5 and as bad as 6mpg (very bad head wind, fully loaded). In the summer when there is no wind I'm closer to 9mpg. Very heavy load that 4100 all loaded up. I was wondering if we put one of those big-rig trailer tails on, maybe we could get all the way up to 9.5mpg average. :)

Greg, I'm sure anything would help. My guess is they would be like the wind breaks on top of the cab. Good for the million-miler big rigs but wouldn't pay for themselves on recreational vehicles.

JanAndBill
12-28-2013, 09:10 PM
Bulletproofed 6.0 running an SCT tuner with mild tow boost, average 10.8 to 12.0 towing, depending on hills, wind and fuel quality. For some reason, it seems that I always get better fuel mileage with Mobil Diesel???? Over Thanksgiving up through Tennesse, Kentucky, and Missouri we stuggled against a really bad headwind. Fuel mileage dropped to 9.5. Average speed on the highway is around 68.

dfk009
12-28-2013, 09:41 PM
My Ford 6.0 pulling a 29 ft fifth wheel getting 13.5 mpg, dropped to 10.0 mpg pulling our new 38 ft fifth wheel. Never weighed either trailer. I know that I have lots more weight hanging back there now, but expected the results.

porthole
12-29-2013, 08:40 PM
Did the dealer flash your computer when you had it in for service???


Yes, the one day I forgot to specifically request no trans flash...................

HornedToad
12-30-2013, 02:50 PM
Yes, the one day I forgot to specifically request no trans flash...................

Based on my tow MPG I think I got that update on my 2013 for free at the factory.

So would an aftermarket tuner, that the OP and others run,
get you back & me up to 12 MPG towing???

DW_Gray
12-30-2013, 06:41 PM
I'm towing over 19K pounds and and my overall average is 9.5 MPG. Depending on terrain and environmental conditions, I've ranged from a low 7 MPG and up to a very good 13 MPG. (Love those flat highways with a tail wind.)

scottyb
12-30-2013, 09:03 PM
I'm towing over 19K pounds and and my overall average is 9.5 MPG. Depending on terrain and environmental conditions, I've ranged from a low 7 MPG and up to a very good 13 MPG. (Love those flat highways with a tail wind.)

My F-350 barely gets 13 empty with a tail wind.

diesel_doberman
12-31-2013, 01:20 AM
The issue is the mods are bow illegal. Unless you can find a product distributor that still hS the programmers with the dpf removal tune. And of you do find them. I'm pretty sure there charging close to 2000 for the programmer alone.

porthole
12-31-2013, 09:18 AM
Based on my tow MPG I think I got that update on my 2013 for free at the factory.



You did :rolleyes:


So would an aftermarket tuner, that the OP and others run, get you back & me up to 12 MPG towing???


Older trucks - maybe.

Newer trucks, minimal. Unless you delete all of the emission controls. Even with that you have to wonder.

The trucks running around with everything deleted with claims of 22 mpg and 600 horsepower and pumping out black smoke ???
Black smoke is unburned fuel. If it is not being consumed in the cylinder - it is wasted.

Once you drive through all the diesel truck forum claims of increased mileage you can find that in reality,very few are substantiated.
On the older trucks tuners would fine tune the delivery and give some increase of mileage. But 25-50% increase in fuel mileage is .................

On the flip side, you have to understand diesel technology a bit see how increasing horsepower (within reason) can actually increase fuel mileage.
Doesn't work that way with gasoline engines.

Same thing goes with the claims of intake systems. The rage of the DMax engine was that everyone who replace the factory intake noticeably a significant gain in power. The reality with that though is that the 10-12 HP increase "claim" is not something you can feel with your "butt dyno".

And at the end of the day, it turns out that the factory intake system in the Dmax is superior to anything on the aftermarket, both in new and aged air filter flow.
Pretty much the same with the Fords and Dodges.

diesel_doberman
01-02-2014, 12:10 AM
My truck is a 2009 F350 6.4l. With the upgrades on my truck I had HUGE improvements in Milage.

Truck doesn't bellow black smoke. I don't claim super power. I can snap a photo of my dash that shows what my miles per gallon is.

Drive empty from Cincinnati to Hilton head (truck bed full, with cover) got 20-21 mpg down and back. Of course ALL HIGHWAY.

Daily driving I get 15-16. (50-50 highway and city)

And as said before 13-14 with tt.

It's driving smart. Just because the truck has the power now doesn't mean I should use it. Easy on the fuel pedal. I leave it on the highest hp setting while not towing. And no power while towing.

DW_Gray
01-31-2014, 09:09 PM
Here is the latest mileage report on this unplanned long distant trip from Montgomery AL to Sonora, CA during a five day period.

The majority of the distance was driven at 65 MPH, which is above my self-imposed 58 MPH limit all other times. The actual moving speed average was 60.4 MPH and the overall trip average was 51.1 MPH. The first two day’s driving conditions between Montgomery, AL and Amarillo, TX were horrible, especially through the Dallas/Fort Worth metro area. Hindsight now leads me to believe taking the longer Interstate route to Amarillo would have been much better.



Date
Miles
Fuel (Gal.)
MPG
Price/Gal
Total


1/23/2014
Start
N/A
N/A
N/A
N/A


1/23/2014
247
32.045
7.7
$3.889
$124.62


1/23/2014
N/A
25.714
N/A
$3.889
$100.00


1/24/2014
303
11.947
8.0
$3.599
$43.00


1/24/2014
195
25.135
7.8
$3.899
$98.00


1/24/2014
157
25.16
6.2
$3.569
$89.80


1/25/2014
172
23.165
7.4
$3.799
$88.00


1/25/2014
258
33.088
7.8
$3.929
$130.00


1/26/2014
272
32.99
8.2
$3.789
$125.00


1/26/2014
252
30.287
8.3
$3.929
$119.00


1/27/2014
247
29.304
8.4
$4.129
$121.00


1/27/2014
N/A
26.048
N/A
$3.839
$102.60


1/28/2014
323
11.636
8.6
$4.039
$47.00


Total/Avg

2426
306.519
7.9
$3.876
$1,188.02

ILH
01-31-2014, 09:52 PM
Wow. I don't think I've ever gotten less than 10mpg.

1woodwork
01-31-2014, 09:58 PM
I went from a 31TT weighing 8950 to a 38fifth wheel weighing 15500. I have a 2011 Dodge 6.7 Diesel and saw very little change in fuel mileage. I average 9.5 to 11.5 driving 62 mph.

caissiel
01-31-2014, 10:58 PM
I drove from LA border to Alamo TX last week. I filled with bad fuel at the border and fuel mileage dropped to 9 on my ScangaugeII and the trailer really felt heavy. Half way I fueled at Exxon and everything was well even in strong wind of TX.
But I always hope for over 12 when towing the BC.
Good luck in your experience with the unit.

Sent from my LG-LS720 using Tapatalk

DW_Gray
02-01-2014, 12:16 AM
Wow. I don't think I've ever gotten less than 10mpg.

Yeah, but I bet you're not towing 19,700 pounds either. Hence the reason I tow it at 58 MPH and get much better mileage. The only reason I drove 65 this trip was to make to a funeral in time.

scottyb
02-01-2014, 01:49 PM
Dave, your mileage and weights look very similar to mine. I also document mileage and fuel at every fillup. I have been doing that for probably 25 years. I still write it down in a spiral notebook. Do you use some type of app or did you just put it on a spread sheet?

ILH
02-01-2014, 02:17 PM
I track fill ups and fuel consumption for multiple vehicles on gasbuddy.com. Its also handy to find lowest prices.

DW_Gray
02-01-2014, 02:59 PM
Dave, your mileage and weights look very similar to mine. I also document mileage and fuel at every fillup. I have been doing that for probably 25 years. I still write it down in a spiral notebook. Do you use some type of app or did you just put it on a spread sheet?

I don't routinely track my mileage on paper or with an app. I did this time because I wanted to find out how much difference driving 65 MPH would make.

Sent from my VS980 4G using Tapatalk

scottyb
02-01-2014, 04:13 PM
I track fill ups and fuel consumption for multiple vehicles on gasbuddy.com. Its also handy to find lowest prices.

I've heard of it. Is it an app for a smart phone?

Dave, you must be running an OEM fuel tank, looking at the frequency of your fuel stops.

DW_Gray
02-01-2014, 04:56 PM
Dave, you must be running an OEM fuel tank, looking at the frequency of your fuel stops.

Correct. This last year of full-time travels, I've only driven approximately 150 miles per week. Amy and I have seen more interesting sites that way and it fits into my budget. But our travels are coming to a temporary close for a while (//heartlandowners.org/showthread.php/43814-Fulltiming-coming-to-a-close?highlight=).

For20hunter
02-01-2014, 05:13 PM
Gas Buddy is an amazing app that I have using for the last 2 years and have save hundreds of dollars in Fuel costs. It is compatible with all iPhones, android and windows based smart phones and is free.


Rod Ditrich

JanAndBill
02-01-2014, 06:01 PM
Used this site daily for years when we had the trucking company. Not always the cheapest site in an area, but you know you won't have problems getting in to them. Lots of other useful information about the facility as well. http://www.gocomchek.com/

porthole
02-01-2014, 08:28 PM
I do keep track of fuel for the truck on a spreadsheet. But, I found an app that may eliminate the excel file.

"Gas Cubby" I liked the free version well enough to download the pay version.

https://itunes.apple.com/us/app/gas-cubby-free-fuel-economy/id347639491?mt=8