|
|
05-20-2014, 02:23 AM
|
#1
|
Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
|
8.2 MPG with 6.7
I reached a new low yesterday towing across Oklahoma. We were getting hit with a south-southwest wind of around 25-30mph and heading west on I-44, US69, then I-40. Started at 9.5mpg but by the end of the day our average was 8.2 on lie-of-meter. More of the same today.
__________________
Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
|
|
|
05-20-2014, 02:27 AM
|
#2
|
Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
|
Some people tend to underestimate the wind factor. It can really help save fuel if it's at your back, but head on it can kill mileage. If you were doing 65mph and the wind was 30mph, that was the same as doing 95mph from a resistance stand point. It's a wonder you were even getting 8.2mpg!
|
|
|
05-20-2014, 03:07 AM
|
#3
|
Montana Master
Join Date: Jan 2012
Location: Copperas Cove
Posts: 1,426
M.O.C. #12096
|
Yeah I think wind affects the mpg more then weight.... seems like towing 5k or towing 15k the mpg is pretty close, but throw in a 15 mph wind and the mpg go in the sh......well you get the picture lol lol lol
|
|
|
05-20-2014, 04:14 AM
|
#4
|
Montana Master
Join Date: Mar 2012
Location: Davison
Posts: 786
M.O.C. #12331
|
When I tow my brothers implement trailer with an expanded metal ramp that sticks up about seven feet, I get about the same as towing Hannah.
|
|
|
05-20-2014, 06:10 AM
|
#5
|
Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
|
Something to be said about all that frontal area behind you as well as all the different drags from stuff on the roof and stuff underneath monty. It's the price we pay to be able to enjoy the life we live. IF life were cyclic, we all would come back as montys in our next life and have to put up with whoever owned us! Now that's a scarey thought! John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
|
|
|
05-20-2014, 06:14 AM
|
#6
|
Montana Master
Join Date: Jan 2006
Location: San Antonio
Posts: 1,300
M.O.C. #5165
|
Hope all your future travels are DOWN WIND! Have a great trip--but watch the fuel gauge.
__________________
F-250 King Ranch Crew Cab 2012, Single Wheel, 6.7 L Diesel, Transfer Flow Internal 50 Gallon Fuel Tank, Upgraded Ford Software for 50 Gallon tank, 2006 3475Rl with Mor-ryde King Pin, 2nd AC, 2nd Battery, Pressure Pro TPMS, Wet Bolt Shackle Kit
|
|
|
05-20-2014, 06:22 AM
|
#7
|
Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
|
One thing that might make you feel better. We tow out to New Mexico and back every year and the first year I was upset because I only got 9.5 on the way out. Then I remembered it's generally up hill all the way. On the way back we got 14. Yesterday's wind was a bugger so you should be happy with what you got.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
|
|
|
05-20-2014, 07:24 AM
|
#8
|
Established Member
Join Date: Feb 2014
Location: Spring
Posts: 43
M.O.C. #14034
|
5ver is acting like a sea anchor. Start tacking back and forth across the highway to make it a sail. :^)
|
|
|
05-20-2014, 12:23 PM
|
#9
|
Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
|
All good points. Tomorrow we head out from Amarillo to Ruidoso Downs, and of course predicted winds are staying out of the SW at anywhere from 15 to 22mph. Gaining a little elevation also, about 6,000 feet I think, so I may look back on 8mpg and think that was great! What's bad is my F350 only has the small fuel tank so I am looking for fuel every 150 - 175 miles. Don't like it to get under 1/4 of a tank.
__________________
Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
|
|
|
05-20-2014, 12:35 PM
|
#10
|
Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
|
winds are a major factor, and clearly, if your 6.7 is like ours, your MPG suffered greatly.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
|
|
|
05-20-2014, 01:48 PM
|
#11
|
Montana Master
Join Date: Oct 2009
Location: Navarre
Posts: 1,527
M.O.C. #9765
|
Traveled from Amarillo to Abq Friday, best I could do is 8.7. Abq to Moab Sunday better. Leaving Moab is going to suck some fuel.
Mike
|
|
|
05-21-2014, 03:23 AM
|
#12
|
Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
|
Turn around and go east?
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
|
|
|
05-21-2014, 04:38 AM
|
#13
|
Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
|
That why they put air brakes on aircraft...wind has a great effect. As any pilot knows air speed and ground speed are usually different depending on winds. The higher the "air speed" the more wind resistance you will see. Wind resistance is the main cause of mileage decrease with speed. Of course it is not the only factor, but it is one of the main factors. This is why aerodynamic body shapes increase mileage in cars. The designers take drag coefficients in to consideration.
You will always get better mileage with a tail wind and worst mileage when driving into a head wind. The faster your "air speed" the more the aerodynamic drag your vehicle will encounter. Aerodynamic drag is the biggest factor in speed related mileage drops. There are also mechanical inefficiencies and friction losses, but aerodynamic drag is a big factor.
If you are driving at 65mph into a 20 mph headwind your "airspeed" is 85mph. If you are driving at 65mph with a 20mph tail wind your airspeed is only 45mph. Wind will make a huge difference in your mileage.
|
|
|
05-21-2014, 06:42 AM
|
#14
|
Montana Master
Join Date: Jan 2006
Location: San Antonio
Posts: 1,300
M.O.C. #5165
|
On my 2012 F250, I upgraded the 26 gal tank to 50 gal by Transfer Flow and it was install in the same place -- not in the bed. Also got my truck software changed for the 50 gallon tank at my Ford Dealer. Best upgrade I have ever done! Start each day with a full tank and just cruise!
__________________
F-250 King Ranch Crew Cab 2012, Single Wheel, 6.7 L Diesel, Transfer Flow Internal 50 Gallon Fuel Tank, Upgraded Ford Software for 50 Gallon tank, 2006 3475Rl with Mor-ryde King Pin, 2nd AC, 2nd Battery, Pressure Pro TPMS, Wet Bolt Shackle Kit
|
|
|
05-21-2014, 02:11 PM
|
#15
|
Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
|
Little less wind getting to Ruidoso. Running about my average of 63mph ended up with 9.3mpg. I was thrilled! These are the trips you do start thinking about changing out the tank for a bigger one.....but they aren't cheap.
__________________
Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
|
|
|
05-21-2014, 05:18 PM
|
#16
|
Montana Master
Join Date: Feb 2006
Location: Denver
Posts: 1,046
M.O.C. #5329
|
We got 13 on our last trip, but towing across New Mexico with a stiff headwind we got down to 7mpg. 7.3 Ford Superduty diesel.
|
|
|
05-22-2014, 05:00 AM
|
#17
|
Seasoned Camper
Join Date: Jan 2009
Location: Libby
Posts: 98
M.O.C. #9080
|
Just put a 50 gal Titan tank on my 2012 F350, it replaces the OEM tank, no transfer pumps to deal with. It is nice to see 900 miles to empty on the info center!
|
|
|
05-23-2014, 09:52 AM
|
#18
|
Montana Master
Join Date: Feb 2006
Location: Denver
Posts: 1,046
M.O.C. #5329
|
Bet it hurts at the pump, though!
|
|
|
05-23-2014, 03:55 PM
|
#19
|
Seasoned Camper
Join Date: Jan 2009
Location: Libby
Posts: 98
M.O.C. #9080
|
Once a day or 2 to 3 times a day it's all the same. I get to pick fuel prices instead of being stuck needing to fill and paying premium prices.
|
|
|
05-24-2014, 06:00 PM
|
#20
|
Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
|
Holy Cow! Ran from Tucson to Phoenix with hardly any wind and averaged 12.5 mpg! Something must be wrong with my truck.
__________________
Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|