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04-11-2012, 03:13 PM
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#1
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Member
Workhorse Chassis Owner
Join Date: Mar 2012
Posts: 46
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Gas Mileage
We just bought an 08 workhorse 6 speed, what type of gas mileage can I expect for hwy driving?
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04-11-2012, 03:36 PM
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#2
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Senior Member
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,527
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6.5 to 8.0 MPG depending on your weight and speed. Congrats on your purchase. Which chassis did you get?
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04-11-2012, 04:01 PM
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#3
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Moderator Emeritus
Winnebago Owners Club Workhorse Chassis Owner Coastal Campers Carolina Campers
Join Date: Jan 2000
Location: Conway, SC
Posts: 23,641
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Quote:
Originally Posted by Reddemab
We just bought an 08 workhorse 6 speed, what type of gas mileage can I expect for hwy driving?
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Please also consider joining the Workhorse Chassis Motorhome Club. 
__________________
03 Adventurer 38G, Workhorse W22
F&R Track Bars, Safety+ , Ultrapower, Taylor Extremes, SGII
TST 507, Blue Ox, SMI, Koni FSD, CrossFire
RV/MH Hall of Fame - Lifetime Member
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04-11-2012, 04:09 PM
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#4
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Member
Workhorse Chassis Owner
Join Date: Mar 2012
Posts: 46
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Big Workhorse w22
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04-11-2012, 04:10 PM
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#5
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Member
Workhorse Chassis Owner
Join Date: Mar 2012
Posts: 46
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Engine: Big Workhorse W22 Chassis, 340hp 8.1 Vortec, Allison 6 Speed Automatic Transmission with Grade Brake
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04-11-2012, 04:27 PM
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#6
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Senior Member
Workhorse Chassis Owner
Join Date: Nov 2005
Location: chokoloskee, fl 34138
Posts: 717
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If you run the speed limit you will get 5 to 6 on ethanol on real gas 6 to 7 on E85 you will not be able to run in overdrive. I could only get 55 to 60 wide open when I mistakenly put E85 in the tank
__________________
2016 Dynamax DX3
USCG Ret BMCM
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04-11-2012, 04:48 PM
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#7
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Senior Member
Ford Super Duty Owner
Join Date: May 2010
Location: Chasing 70 degrees in lower 48
Posts: 2,031
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W22 2008, light foot, no toad, empty tanks and drive around 58/60 we get high 9's on flat land. Fully loaded, 3,000 lb jeep and at 60/65 we get mid 7's on typical 7k summer trip. Somewhere between 4 and 5 dollars a gallon I think we will leave toad at home and rent cars as needed.
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Suzie & Chuck USNR USAF USCGA Challenger Owners Club 2015 37KT Challenger, Demco Commander tow bar, Ready Brake, Sewer Solutions, Safe-T-Plus 41-230, 5-Star tune, towing 2017 Ford Edge FWD 3.6L V-6 four down & 385 FastTrack kayak in the basement.
Summer - Creede, CO Winter - Okeechobee, FL
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04-11-2012, 05:05 PM
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#8
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Senior Member
National RV Owners Club Workhorse Chassis Owner Ford Super Duty Owner Carolina Campers
Join Date: Aug 2011
Posts: 2,266
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I get around 8mpg avg mixed driving over last year.
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2002 National Dolphin LX 6356
Workhorse W-22 chassis
Don't believe everything you think.
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04-12-2012, 07:20 AM
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#9
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Senior Member
Join Date: Feb 2009
Location: Placerville CA
Posts: 248
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In Northern CA, never on a flat highway for long, towing a 3200 pound car, driving about 60 MPH we get between 6.5 to 7 MPG. I always try to by fuel at Costco so what ever mixture they sell in CA is usually in our rig. The mileage I quoted is the actual mileage, not what the trip computer says. Calculated as; fill the tank, zero the trip odometer, fill the tank, then divide the distance by the gallons. I have seen 8 MPG on rare occasion on long flat highways with little or no wind.
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Jim
2021 Grand Design Reflection 303RLS
Retired and Having Fun
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04-12-2012, 08:12 AM
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#10
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Senior Member
National RV Owners Club Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 2,901
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Seven point five MPG average over the lifetime so far, fully loaded, towing, up hill and down ,in the cold, in the heat, burning 87 octane whatever comes out of the pump for 45,635 miles
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I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
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04-12-2012, 09:10 AM
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#11
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Member
Workhorse Chassis Owner
Join Date: Mar 2012
Posts: 46
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Thanks, not bad considering.....we won't be towing. Anyone adding additives? Is it necessary? I'm in southern California.
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04-12-2012, 09:17 AM
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#12
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Registered User
Join Date: Apr 2012
Posts: 364
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Quote:
Originally Posted by Reddemab
Thanks, not bad considering.....we won't be towing. Anyone adding additives? Is it necessary? I'm in southern California.
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I do as I feel with E10 it is necessary and makes a difference. I use AMSOIL's Performance Improver for gasoline/E10 right before a big trip to clean the fuel system to get my best gas mileage. I also run the generator to clean it as well.
I also use AMSOIL's Gasoline Stabilizer if I know it will sit a month before fresh gas will be put in. I also run the generator to make sure it is stabilized as well.
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04-12-2012, 09:54 AM
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#13
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,154
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I averaged 7.1mpg over 60,000 miles towing various toads.
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2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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04-12-2012, 10:13 AM
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#14
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Senior Member
Newmar Owners Club Freightliner Owners Club Spartan Chassis
Join Date: Apr 2012
Location: ON THE ROAD...SOMEWHERE
Posts: 6,973
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Is there much of a difference between the W24 with a 5 vs 6 speed Allison on average?
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Don, Sandee & GSD Zeus. Guardian GSDs Gunny (7/11/15) & Thor (5/5/15)
2006 2015 DSDP 4320 4369, FL Chassis, 2013 CR-V 2020 Jeep Overland, Blue Ox Avail, SMI AF1.
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