Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-14-2010, 09:26 PM   #15
3 Rivet Member
 
JimW's Avatar
 
1997 30' Limited
Omaha , Nebraska
Join Date: Aug 2009
Posts: 108
The magic number for our extended trips is 12.7 mpg seldom towing over 65mph. This mileage is all inclusive of being connected or not. This figure has held true pulling the AS to AZ this winter and the 3 month trip and 6500 miles, so far, we're presently on.

JIMW
__________________

__________________
Rig: '97 30' Limited
Towed by: '13 Silverado 2500 Duramax


WBCCI #22116
JimW is offline   Reply With Quote
Old 10-15-2010, 05:27 AM   #16
4 Rivet Member
 
Davis's Avatar
 
1996 34' Excella
Americus , Georgia
Join Date: May 2004
Posts: 307
I have a 34ft trailer and usually stay on flat land here in GA and N FL.I usually tow at 60-65 mph.

1994 Chevrolet 3500 dually 6.5td, 4.10 axle....... 10.5 mpg
2004 Chevrolet Suburban 1500 5.3 V8 3.73 axle....10.5 - 11 mpg
2005 Chevrolet Suburban 2500 6.0 V8 4.10 axle ....9-10 mpg
__________________

__________________
1991 Airstream Excella 1000 34ft (SOLD)
1994 Chevrolet Crew Cab dually 2WD 6.5td
2005 Chevrolet Suburban LT 1500 2WD 5.3
WBCCI # 10219 Georgia Unit
AIR # 5131
Davis is offline   Reply With Quote
Old 10-15-2010, 05:52 AM   #17
4 Rivet Member
 
1971 29' Ambassador
Leonardtown , Maryland
Join Date: Oct 2004
Posts: 262
Images: 3
Towing a 30' Classic with the 2007 Dodge 6.7 ltr diesel and seldom going over 65 mph, my on board computer has adveraged my miliage to 13 to 14 mpg, as long as I keep my foot off the fire wall.
__________________
_________________

Rebee - WBCCI #1325
2002 Classic Ltd 30'
2007 Dodge 2500, 6.7 Cummins
Rebee is offline   Reply With Quote
Old 10-15-2010, 06:59 AM   #18
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
This is an old thread, and since I first posted I've traded trucks and trailers. On our trip to the West and Alaska last year of almost 15,000 miles, I kept every fuel receipt and logged all mileages, and then averaged the mileage when we got home, and did not rely on the on-board vehicle computer which has proven more than once to be a just plain wrong.

2008 GMC 3/4 ton Duramax Diesel 4X4, 3.73 gears, '01 25' Excella, 12.4 MPG. This driving mostly 65, but when conditions allowed, up to 75.

Last month I traded the 25' for a '04 28' Classic, and had to go to Virginia to get it, and on the 1500 mile tow coming home at 65, I averaged 12.4MPG.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 10-15-2010, 07:34 AM   #19
Rivet Master
 
boondockdad's Avatar
 
2008 30' Classic S/O
Dearborn , Michigan
Join Date: Aug 2006
Posts: 1,295
Images: 21
Quote:
Originally Posted by SteveH View Post
I kept every fuel receipt and logged all mileages, and then averaged the mileage when we got home, and did not rely on the on-board vehicle computer which has proven more than once to be a just plain wrong.
Exactly. I've never owned a vehicle with an accurate on-board mpg computer, and my present Suburban is, by far, the worst.

I calculated our last 2,000 mile trip (with every receipt, and trip odo), to be 8.6mpg- on board trip computer read 12.7
__________________
boondockdad is offline   Reply With Quote
Old 10-15-2010, 08:01 AM   #20
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
Quote:
Originally Posted by finalcutjoe View Post
Exactly. I've never owned a vehicle with an accurate on-board mpg computer, and my present Suburban is, by far, the worst.

I calculated our last 2,000 mile trip (with every receipt, and trip odo), to be 8.6mpg- on board trip computer read 12.7
The one in my truck is not that far off, but on fuel mileage will vary from calculated by as much as a few tenths. Over the distance of a long trip, it could be more, and I do notice the DIC (GM's Driver Information Center) is always on the high side. It has several functions and the only one I rely on because it is always within 1 to 2/10 of a gallon, is the fuel used.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 10-15-2010, 08:54 AM   #21
3 Rivet Member
 
pickerdd's Avatar
 
1971 23' Safari
Marietta , Georgia
Join Date: Jan 2007
Posts: 218
On my recent 2000 mile trip to Winfield, KS (from Atlanta, GA) I got 12 mpg when I towed my '71 23' Safari with my 2008 V8 4WD Runner. I kept it between 60-65 mpg.

As an aside - I-40 SUCKS in Arkansas and Oklahoma!
__________________
- David
1971 23' Airstream Safari - "Moe"
2017 Ford F350 4x4 6.7 CCLB - Silver/Black - "Max"
pickerdd is offline   Reply With Quote
Old 10-15-2010, 09:06 AM   #22
2 Rivet Member
 
RichWoodward's Avatar
 
1990 29' Excella
Lexington , North Carolina
Join Date: Nov 2006
Posts: 22
I have an 2008 Silverado, 2 wheel drive, with the 6.0 Liter engine. I frequently travel from North Carolina to Northern Indiana and have always watched my mileage on that trip. As a disclaimer, I do use the GM Driver Information Center but usually do a reset when leaving home in order to give me a more accurate data base and have never had any reason to question the accuracy. On my old Airstream, a 1976 21' single axle Sovereign, I usually logged about 11.7 mpg for the trip, traveling at reasonable speeds of 60 to 65 mph. Last month I bought a 1990 29' Excella and was surprised to see that my mileage only dropped to 11.4 mpg on this same trip. Additionally, the new trailer handled and felt much better behind me which was totally unexpected. I now suspect that the dual axles and more balanced hitch weight contributed to the better ride. I also suspect that most of the mpg figures relate to the hole I am punching in the air rather than the weight of the vehicle I am dragging behind me. I also see much better mileage when heading south into Florida on decent interstates with no hills.
__________________
RichWoodward is offline   Reply With Quote
Old 10-15-2010, 09:31 AM   #23
Birdie Momma
 
NJtoNC's Avatar
 
1957 26' Overlander
1956 22' Flying Cloud
Vintage Kin Owner
Rutherford Co. , North Carolina
Join Date: Dec 2009
Posts: 904
wow, i am really surprised at these figures.

On our month long road trip in sept, we started out towing our 19ft 62 gobetrotter with a '84 6.2l diesel suburban, averaging 10mpg from PA to idaho. the suburban died in boise, and we picked up with a 2005 4.7l V8 jeep cherokee, also averaging about 10mpg from boise to CA and through the southwest, southeast and back to PA. it occasionally went down to 9mpg in the mountains and up to 11mpg.

i was actually thinking of selling it in favor of something with better towing MPG.... but after reading this thread, i don't think its worth it to gain what could be a max of 14mpg with a much more expensive, bigger vehicle. I guess we'll keep it

i was nervous getting the cherokee
__________________
'57 Overlander | '56 Flying Cloud | '51 Spartanette
NJtoNC is offline   Reply With Quote
Old 10-15-2010, 10:02 AM   #24
2 Rivet Member
 
TCHURCH's Avatar
 
2011 22' Sport FB
Bonita Springs , Florida
Join Date: Aug 2010
Posts: 26
Images: 1
Land Rover LR3 SE V8 (300hp)
2011 Sport 22FB

highway speed without trailer 70 mpg 20-21
highway speed with trailer 60 mpg 14.5 (florida flatlands only so far)

_______
Tony Church
Bonita Springs, FL
__________________
TCHURCH is offline   Reply With Quote
Old 10-15-2010, 10:15 AM   #25
Rivet Master
 
Currently Looking...
Nowhere , Somewhere
Join Date: Jul 2005
Posts: 6,417
Blog Entries: 2
Interstate travel Fl to Oh on I75 and back on I77 right at 11 mpg. I travel between 60 and 65 mpg. zz
__________________
avionstream is offline   Reply With Quote
Old 10-15-2010, 12:18 PM   #26
Rivet Master
 
Royce's Avatar
 
1977 Argosy Minuet 6.0 Metre
Colorado Springs , Colorado
Join Date: Dec 2003
Posts: 716
Images: 9
TV: '94' Jeep Wrangler (modified), 4.0L with 197K miles
TT: '77' Minuet 6 Metre
Tow Speed: typically between 60-65 MPH except up the long pulls.
AVGMPG: 14.5 long or short trips in and out of Colorado.
Between COS and Divide Colorado going up the hill, 10 MPG
The Jeep gets 16-17 city and upto 22 highway when alone.
__________________
Royce (K0RKK) 146.460 simplex
Web page http://spearfishcreek.net/
AIR# 3913
'77' Minuet 6 Metre, behind a 2005 stock Jeep Rubicon with Equa-L-Zer hitch.
Royce is offline   Reply With Quote
Old 10-15-2010, 12:34 PM   #27
Hawkeyes & Harleys
 
HOG-I's Avatar
 
2006 16' International CCD
Las Cruces , New Mexico
Join Date: Dec 2006
Posts: 87
Lincoln F150 and 16' Quick Silver with EnKay Flaps @ 65mph - 12mpg. No AS and Flaps @70mph -17mpg. No AS with flaps on @70mph - 15mpg.
__________________
HOG-I is offline   Reply With Quote
Old 10-15-2010, 04:21 PM   #28
4 Rivet Member
 
1971 29' Ambassador
Leonardtown , Maryland
Join Date: Oct 2004
Posts: 262
Images: 3
Quote:
Originally Posted by finalcutjoe View Post
Exactly. I've never owned a vehicle with an accurate on-board mpg computer, and my present Suburban is, by far, the worst.

I calculated our last 2,000 mile trip (with every receipt, and trip odo), to be 8.6mpg- on board trip computer read 12.7

If the MPG calculations are incorrect then is the odomoter also incorrect because it is also calcuated by the same computer?
__________________

__________________
_________________

Rebee - WBCCI #1325
2002 Classic Ltd 30'
2007 Dodge 2500, 6.7 Cummins
Rebee is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
8 MPG and one other question hscheil On The Road... 18 06-09-2008 06:36 PM
19 mpg with new diesel Grand Master Tow Vehicles 7 03-08-2008 09:21 PM
MPG with camper shell dhe9 Tow Vehicles 4 02-26-2004 12:17 PM
2 speed wiper switch has no low speed rdm Mechanics Corner - Engines, Transmission & More... 6 01-09-2003 09:47 PM
tornado and mpg ALANSD Airstream Motorhome Forums 3 07-21-2002 09:05 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:25 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.