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Topic: How many miles per gallon do you get?

Posted By: rvonthegogo on 02/17/11 08:27pm

How many miles per gallon do you get?


Posted By: Nascarcruzin on 02/17/11 08:28pm

About 9, for us.


Ronnie & Rebecca
Soddy Daisy, TN
Full-timing since 2004
Check out our adventures:
North to Alaska 2011

Travel Journal Enter the password - 12345
2008 Alaskan adventure
2009 Northeast coast and Canadian Maritimes

1999 Holiday Rambler Imperial 40WDS
FMCA #388387



Posted By: Two Jayhawks on 02/17/11 09:00pm

Worst is 8.7 and best is 10.2. Ave is about 9.5.


2002 Safari Zanzibar
CAT C12 455/1550
Allison 4000
Saturn Vue w/ReadyBrake
FMCA# 390819



Posted By: Golden_HVAC on 02/17/11 08:55pm

I get about 7 with a 97 fuel injected 30' Bounder and 460" engine in it.

16,500 GVW, and a 4,200 pound car towed behind.

Fred.


Posted By: Mr.Mark on 02/17/11 08:40pm

We've gotten 4.5 on a short hilly route and up to 9.5 with the wind blowing just right. I would say our average is 7.5.

MM.


Mr.Mark
2008 Monaco Dynasty, 42.2 ft., 4 slides, 425 hp clean-air Cummins diesel
2013 Honda CR-V EXL, AWD, w/Nav, SMI Air Force One vacuum-assisted braking


Posted By: RoadHound_RVer on 02/17/11 08:35pm

Avg over 6500 miles is 7.43 mpg half somewhat flat, half Texas hill country, all running 30,500 lbs or so with a 4500 lb toad. I always drive 63-65 mph. I've seen others with same rig as mine claim they get 10 mpg. Must be running downhill the whole way or too slow for me.


Jody & Sylvia
Smokey and Casper - miniature schnauzers
2004 Holiday Rambler Endeavor 40PDQ



Posted By: mike brez on 02/17/11 09:28pm

T&A wrote:

Usually 8-9 without the Jeep. With the jeep, I figure around 17 mph average per vehicle.
Terry



17 mph


1994 Pace Arrow 33L,454,P30
2oo4 ground up ridgid chopper 120rwhp
http://community.webshots.com/user/oneHD


Posted By: Fishinghat on 02/17/11 09:46pm

In over 50K miles, averaging just over 10 mpg in a 26K coach with an 8.3 mechanical Cummins pulling a 4,600 toad. I keep it down to around 58 to 60 mph.


Holiday Rambler Navigator DP, Hummer, and Honda VT1100C Shadow



Posted By: B Bob on 02/17/11 09:03pm

approx 7-7.5


Posted By: old guy on 02/17/11 09:59pm

this brings back memories when I read a question like this. I had an uncle who got the best gas mileage of anyone in the family. I don't care what kid of car he bought it was always the best one. My dad told me that I could have the best mileage if I so desired to have a car with that option. All I had to do was as my uncle did, lie about it.


Posted By: T&A on 02/17/11 09:08pm

Usually 8-9 without the Jeep. With the jeep, I figure around 17 mph average per vehicle.
Terry


Terry & Amy
2004 Hurricane 30F on P32 Workhorse Chassis
2010 GMC Terrain (Towed)
2010 Ford Escape(Future Towed)

Where are we going.....and why am I in this handbasket?



Posted By: PDRJohn on 02/17/11 09:47pm

Over all average of 8.5 running down the road at 62 mph. 31,000 lbs including toad.


John


'13 Newmar Dutch Star 4347
All electric


Posted By: Tom/Barb on 02/17/11 09:04pm

rvonthegogo wrote:

How many miles per gallon do you get?


21,000 miles average 10.2,


2000 Newmar mountain aire 4081 DP, ISC/350 Allison 6 speed, Wrangler JK toad.


Posted By: Ka Ron on 02/17/11 09:34pm

8 mpg with a 98 Southwind towing a Pontiac Sunfire.


Join Us For A Trip Down The RV Highway



Posted By: Norm Payne on 02/17/11 10:09pm

After the engine (Cummins ISL 370 hp) broke in it has averaged about 9 mpg the last 25,000 miles. I have a 41' motorhome that weighs about 31,000 pounds loaded and tow a CR-V that weighs 3,620 pounds.


Norm
2005 Dutch Star 4015, Cummins ISL 370 hp
2007 Honda CR-V
See Ya Down The Road
http://www.seeya-downtheroad.com


Posted By: PackerBacker on 02/18/11 05:30am

I'm in the 6-8 mpg area. We roll mostly in hilly terrain and have our Jeep Liberty toad about half the time.


Eric
2014 Enterra 314RES (Cruiser RV) TT, Equal-i-zer 12K, Honda 2000 Genny
2014 Ram 1500 Quad Short Bed, 5.7L Hemi, 8 speed auto, 4x4, Line-X
FQCC/Camping Quebec, KOA, Good Sam


Posted By: CaBoy on 02/17/11 11:18pm

Average between 7 to 7 1/2, no difference if towing the Jeep or not. Weigh around 43,000 and run about 62 MPH most the time. Like they say, terrible for a vehicle, not bad for a house.


The older I get, the better I used to be.
1997 Prevost by Country Coach
470 HP Series 60 Detroit / 6 SP. Allison
2005 Jeep Grand Cherokee Toad
Same Co-Pilot for 46 years
2 Boston Terriers, Scout & Mia



Posted By: tandkj on 02/18/11 04:50am

9.5


Tis another fine day to serve in and for the glory of the Corps. Every day is a holiday and every meal a feast.
08 Camelot Custom build
07 Ranger Toad
One Golden Retriever at the Rainbow Bridge and a new one traveling with us.


Posted By: turninghawk on 02/18/11 06:28am

32

(You did mean in my car, right?)


Posted By: jy on 02/18/11 06:17am

7


99 Coachmen 322QB, Ford V10,18 foot Load King open trailer, 2007 Mustang GT Toad, Gibson exhaust,Royal Purple lubricants.Recently retired and planning on doing more RV'ing.



Posted By: s N s on 02/18/11 06:37am

Avg. I will say 8 mpg.


Steve & Sally
HiTee & Hudson (Our Little Poms)
Houston & Heidi (Forever In Our Hearts and Never Forgotten)
04 NEWMAR MACA 3778 W22
05 pt Cruiser Vert 5 speed
Demco baseplate with Commander Tow Bar

"Never try to outsmart your common sense"



Posted By: SoCal Kevin on 02/17/11 11:07pm

I have not averaged the mileage for the entire period that we've had our coach but I do run the numbers on each and every fill up. I have gotten over 10 pulling our Suburban when I'm on relatively flat ground and not fighting a strong headwind. My best, on a 700+ mile drive, was 10.68.

I seem to average around 9 overall but in the mountains it can go to 6's and 7's. I do not baby it - I drive around 65 on the Fwy. All in all, I'm pretty happy.


SoCal Kevin
1995 HR Navigator
M11 400 Cummins
Allison HD 4060
Ready Brute Towbar; 2000 Suburban Toad



Posted By: dbates on 02/18/11 06:57am

Welcome to the forum.

Mileage will vary substantially from tank to tank because of:
1. The sensitivity of the automatic pump nozzle shut off
2. Station’s ground slope (leaning to/from pump or front to back)
3. How much of a hurry you are to get going
4. How you drive & at what speed
5. Travel wind direction
6. Travel terrain
7. Weight of the MH plus what you’re hauling
8. Diesel or gas engine
9. How often you run the gas generator
10. Condition of engine

With a 30’ 1998 Winnebago over a 1999 Ford V-10 chassis in 35,861 miles, pulling a Vibe on a KarKaddy dolly I’ve averaged 8.31 mpg. Individual tank mpg have ranged from 7 to 12. I drive interstates at about 62 mph and other roads the posted speed limit.

Do a search using “MPG” & “miles per gallon” and you’ll find hundreds of additional responses.

Dave


Plus New Brunswick, Prince Edward Island & Nova Scotia



Posted By: timmac on 02/17/11 11:38pm

9+ mpg at 62 mph with cruise control. (gas not diesel)


Posted By: SpinRite on 02/17/11 10:06pm

Fishinghat wrote:

In over 50K miles, averaging just over 10 mpg in a 26K coach with an 8.3 mechanical Cummins pulling a 4,600 toad. I keep it down to around 58 to 60 mph.

Same rig, Same mileage. (Either that, or the same lie! )


'94 Holiday Rambler Navigator
38', Cummins 8.3 300hp, Allison 3060
pushed by a 2005 Honda Element


Posted By: daverich on 02/18/11 06:32am

We get 6.5 to 7.5 depending on conditions and driving under 65.






Posted By: peaches&cream on 02/18/11 04:04am

7.8






Posted By: BillofPA on 02/18/11 07:17am

8.5 to 9.8 at 26,550 lbs., and towing toad and depending on terrain and wind and if running genny because of hot weather and needing to run rooftop ACs. and at 60 to 65mph.


Jenny & Bill
2004 H/Rambler Ambassador 34PDD
Cummins ISC330 Allison 6 speed
2003 Chevy Malibu Toad
Our new Yorkie, Daisy.



Posted By: Captain_Happy on 02/18/11 05:25am

2000 Ford V-10, 7 MPG, 60 to 65 MPH


Posted By: john and terry on 02/18/11 06:46am

6-8...


Full Timing In Our 1996 Winnebago Brave (P30/454)
...Check Out Our Gate Guarding Blog HERE!
TOAD - 2010 Nissan Cube
With 2 Fairly Well Behaved Diggities
Venus And Midnight



Posted By: Bob & Ann on 02/18/11 02:38pm

7 to 8 MPG


Bob and Ann
One HAPPY Schnauzer - Della
One FRISKY Chihuahua - Lola
Tiffin Motor Home
2014 40 QBH Phaeton
Freightliner Chassis
Cummins ISL 380 HP/150 Torque
Onan 10,000 Watt
Four Slide/ 1.5 Bath
2006 Suzuki Grand Vitara Toad
Brake Buddy Vantage


Posted By: wandering1 on 02/19/11 07:46am

85


HR



Posted By: Triker33 on 02/18/11 10:57am

For 47,006 miles average is 10.215 MPG.
22,940 lb MH Pulling 3,300 lb toad or 2,240 lb cargo trailer.


Larry Full Time Since 99
1999 34Q Discovery DP ISB 275HP 6 Speed Allison
Banks Powerpack
DataStorm SatMax5 | VMSpc | Pressure Pro
08 HHR LT2

Click here to see where I am



Posted By: Alan_Hepburn on 02/19/11 05:33pm

timmac wrote:


What does the slope of the gas station pavement have to do with gas mileage.


When the motorhome is absolutely level the fuel inlet is in a specific position relative to the tank. If the inlet is higher than that position (i.e. the front of the motorhome is lower than level) then the pump will shot off later; if the inlet is lower than normal (i.e. the front of the motorhome is higher than normal) then the pump will shut off sooner.


----------------------------------------------
Alan & Sandy Hepburn driving a 2007 Fleetwood Bounder 35E on a Workhorse chassis - Proud to be a Blue Star Family!
Good Sam Member #566004


Posted By: William B on 02/19/11 06:24am

6.2 on a really good day!


Full timing since 2004
2007 Holiday Rambler Navigator
2014 Dodge Ram 1500 Limited

Our Blog



Posted By: brobox on 02/18/11 09:04am

55,000 mile average....7.3 MPG


Chuck
02 Travel Supreme, 2 street side slides
09 Toyota Tacoma 2WD



Posted By: doc brown on 02/19/11 05:27pm

Still breaking in the motor - 39K miles. Getting 7 with Jeep toad and gennie on driving primarily May-August in the western states.


Steve,Kathy,Josh & Morpheus the Basenji
2004 40' TSDP Country Coach Inspire DaVinci
350 Cummins, 3000 Allison
2008 Wrangler X Rubicon/Blue OX Tow Bar/Ready Brake


Posted By: Freightguy on 02/18/11 03:17pm

I average 6.5 per my on board computer.

Get topic. I am in trucking and had a driver tell me fuel was at $3.899 in CT last night.


You are not allowed to see this info.
2005 Tiffin Phaeton 40QDH
2007 Jeep Wrangler Sahara


Posted By: Nomadac on 02/18/11 10:02am

Calculating all fuel added since delivery 28,403 miles,
overall avg. is 8.868 mpg
or excluding gen usage for 263 hrs. equals avg of 9.248 mpg.

The overall encompasses using the generator, w/wo all dinghy towing (RAV4 on a dolly, Honda Pilot 4 down or enclosed car trailer w/63 GP) w/wo dash air, and various road conditions, etc. I use my cruise control set for 62 MPH.

There are numerous factors that effect fuel mileage. The biggest are driver, speed, weight of MH, city vs. highway, cruise vs. manual, terrain, wind, temp. etc. are just a few. Different driver's driving the same unit will get different results, just like driving an auto.

Happy traveling.


Arnie
2003 Travel Supreme MH
38KSO1 Cummins ISC 350HP
2004 Honda Pilot w/SMI Air Force One Brake Sys.
1963 Pontiac Grand Prix 20' Enclosed Car Trailer


Posted By: Supercharged on 02/18/11 07:54am

dbates wrote:

Welcome to the forum.

Mileage will vary substantially from tank to tank because of:
1. The sensitivity of the automatic pump nozzle shut off
2. Station’s ground slope (leaning to/from pump or front to back)
3. How much of a hurry you are to get going
4. How you drive & at what speed
5. Travel wind direction
6. Travel terrain
7. Weight of the MH plus what you’re hauling
8. Diesel or gas engine
9. How often you run the gas generator
10. Condition of engine

With a 30’ 1998 Winnebago over a 1999 Ford V-10 chassis in 35,861 miles, pulling a Vibe on a KarKaddy dolly I’ve averaged 8.31 mpg. Individual tank mpg have ranged from 7 to 12. I drive interstates at about 62 mph and other roads the posted speed limit.

Do a search using “MPG” & “miles per gallon” and you’ll find hundreds of additional responses.

Dave
Do you get better mileage with the tire covers down or up.


2005 Chev 5.3 Supercharged 395HP 425 T hp. Two wheels on front, 2 on back. one seat, tint windows. front and rear bumpers, headlights, windows. Door on each side. Heater, floor mats, 6 Reese candy bars, junk behind seats, some dirt. Pulls so hard.


Posted By: DSDP Don on 02/18/11 04:57pm

400 ISL
28000 pounds
Mileage reported by VMSpc and manual calculations over 38000 miles

8.8 MPG


Don & Mary
2014 Newmar Dutch Star 4018
450 Cummins
2012 Chevrolet Silverado LTZ CrewCab 4WD
2013 Polaris RZR 800 LE



Posted By: obgraham on 02/18/11 07:48am

Jackha1949 wrote:

According to my on-board computer I get 8.8 mpg with my 34H Journey w/ 350 hp C7 Cat and 6 spd Allison transmission.

Similar rig, 2003 engine. 8.9 overall since new according to computer. Suspect the 10 folks are cherry picking.


Posted By: Jhureau881 on 02/19/11 07:25am

Definitely see some trends:

Cummins
ISB 9-11mpg depending on model, newer heavier rigs at lower end
older mechanical 8.3 9+mpg
ISC 8-10mpg
ISL 8-9mpg non-tag 7-8mpg w/tag
older M11 - 8ish
ISM 6.5-7.5 w/tag

CAT
3126 - older, lighter models 8.5-10.5mpg
C7 8-10mpg
Newer and larger CAT = BAAAD

General consensus is older = higher mpg, but is that because of lighter weight or a more efficient engine or both?


Scott Hureau
97 HR Endeavor 37CDS CAT


Posted By: sowego on 02/18/11 03:45pm

Consistent MPG is like catching an extinct animal! When traveling around the country on our vast range of terrain, altitude, weather conditions, city & Interstate driving it varies so much the true average over a 1000 miles trip is hard to figure.

That being said...now that our 38' 2002 with 330 CAT is well broken in we figure we get an average that lands somewhere between 8.5 to 10. We do travel a bit slower...my daughter calls us "turtles" because we drive about 62 mph in faster zones and 55 when that speed is listed. Towing makes only a slight difference.


2002 Tiffin Phaeton
2005 Malibu Maxx toad



Posted By: timmac on 02/18/11 09:29pm

dbates wrote:

Welcome to the forum.

Mileage will vary substantially from tank to tank because of:
1. The sensitivity of the automatic pump nozzle shut off
2. Station’s ground slope (leaning to/from pump or front to back)
3. How much of a hurry you are to get going
4. How you drive & at what speed
5. Travel wind direction
6. Travel terrain
7. Weight of the MH plus what you’re hauling
8. Diesel or gas engine
9. How often you run the gas generator
10. Condition of engine

With a 30’ 1998 Winnebago over a 1999 Ford V-10 chassis in 35,861 miles, pulling a Vibe on a KarKaddy dolly I’ve averaged 8.31 mpg. Individual tank mpg have ranged from 7 to 12. I drive interstates at about 62 mph and other roads the posted speed limit.

Do a search using “MPG” & “miles per gallon” and you’ll find hundreds of additional responses.

Dave


What does the slope of the gas station pavement have to do with gas mileage.


Posted By: T&A on 02/18/11 04:07pm

mike brez wrote:

T&A wrote:

Usually 8-9 without the Jeep. With the jeep, I figure around 17 mph average per vehicle.
Terry



17 mph


Sure, two vehicles get there on the same fuel so I can multiply mpg by 2, right?


Posted By: ticat900 on 02/18/11 04:38pm

Fishinghat wrote:

In over 50K miles, averaging just over 10 mpg in a 26K coach with an 8.3 mechanical Cummins pulling a 4,600 toad. I keep it down to around 58 to 60 mph.

I had a similar unit.330HP 8.3 mechanical 38 ft and got 7.5 if I fibbed a bit.!!!!and TOAD was 3400LBS


Posted By: ticat900 on 02/19/11 09:40am

2008 8.9L 425HP cummin,s towing 4500Lb toad and nothing in the motorhome
except fuel and at 75MPH on flat freeway I got 7.5MPG


Posted By: Jarlaxle on 02/18/11 08:48pm

My B-700 (gas 460) managed 6.5-7.5MPG depending on toad. (Of course, one of the toads managed 46MPG...) Haven't done a long trip yet in the Genesis...but I'll have a 4000+ mile fuel record in mid-June.


John and Elizabeth (Liz), with 3 nutty cats
My beloved St. Bernard, Marm, lost him 1/2/12
Current rig:
1992 International Genesis school bus conversion


Posted By: rlking on 02/18/11 10:08pm

On our last trip (6000 miles) we averaged 7.37 MPG. I like to think of it as 14.74 PMPG (people miles per gallon) 2005 Hurricane 32R with 2004 F53.


Posted By: alandodson on 02/18/11 01:15pm

7.5 to 8.0 most of the time. One summer, when fuel prices were high, we got 10 to 11 driving 55 mph.

When I was young and still living with my parents, my father always got better mileage than I got driving the same cars. And, he was not a slow driver. It was not until I was much older that I discovered he did not know how to figure gas mileage.


Posted By: Doug360 on 02/18/11 10:25am

32' Itasca with 454 --- 12 Imp MPG which = 9.9 US MPG






Posted By: zmotorsports on 02/18/11 07:21am

Towing the Jeep 7.3 mpg, towing the trailer 6.8 mpg. That is taking out generator and Aqua-Hot usage figured over the last three years of owning this coach.

FWIW I don't baby it and generally have the cruise set @ 68 mph. Mike.


2003 Monaco Dynasty/ 26' Haulmark Edge trailer
2011 Jeep Unlimited Rubicon



Posted By: shirlock1 on 02/19/11 04:02pm

Got a 99 Newmar Dutch star with 300 cat Consistently getting just over 10 towing and fully loaded
Jim


1999 Newmar Dutch Star (Rocky)
Cat 300 Allison 6 spd
2009 Subaru Forrester (Frosty)


Posted By: Jackha1949 on 02/18/11 07:41am

According to my on-board computer I get 8.8 mpg with my 34H Journey w/ 350 hp C7 Cat and 6 spd Allison transmission. That is towing a 03 Forester. That is an avg with two drivers, DW drives around 55 mph and I avg 60+ mph.


Jack & Peg
USN Ret AGC
K1ZMB
Sioux Falls, SD
06 Itasca Horizon 40KD


Posted By: JamesBr on 02/18/11 08:09am

2001 Monaco Knight, Cummins ISC 330, I been averaging 9 no matter what I do or where I go on the east coast.


2006 Ford F350 6.0
2014 Primetime Sanibel 3600
Enough other vehicles to not bother listing.

Previous RV: 2001 Monaco Knight


Posted By: Jim Norman on 02/19/11 09:39am

With our rig we average 6.257 after nearly 9k miles last year. That includes a trip across West Virgina where we never saw 6 and only one or two tanks over 7.

Each tank is logged and a minor adjustment made to account for genset IF it was used.

the column headings I use are: Date, Start, Finish, Gallons this tank, Fuel Cost, Current MPG, Miles driven this tank, Aver MPG to date, Current $/Mile, Overall $/Mile, Total Gallons, Total Miles Driven, Total Fuel Cost, Odometer Mileage @ Event Trip Notes, Mileage percentage gain/loss, Four tank average, Cost/Gallon

Mileage at 'event' is a note or link regarding oil changes, maintenance or other. all the rest are controled by formulas in Excel.

I don't look too often at the one labeled total Fuel Cost!


2009 Itasca Sunova 35J
2008 Jeep Liberty (aka FireToad)



Posted By: iasm on 02/18/11 09:46pm

6.4 on a good day and around 5 running hills. 400hp cat. I think its all about weight


Posted By: donkeydew on 02/18/11 06:09pm

on board computer 7.9 pulling trailblazer toad
wallet not near enough


Posted By: EndeavorV10 on 02/18/11 02:13pm

On our last long trip we averaged 7.9mpg and that included quite a few 7% grades. Not too shabby for a porky fully loaded 36ft MH with a 275hp V10 pulling an SUV.

We average 62mph on the highway and on the hills I obviously go slower. We're hoping to go on a trek to the Elkhart rally this year which should prove flater so hoping to get around 8 to 9.


2013 Montana 3725RL Fifth Wheel
Saving up for F-350 Premium Dually 6.7 Diesel
My RV Blog


Posted By: blackttr on 02/18/11 05:08pm

We just completed a trip to Virginia towing our Grand Cherokee and got 9.9 MPG according to the OBC. 2011 Diesel with the clean burn system.


Posted By: messer109 on 02/19/11 06:53pm

The question should be stated. I have a (xx foot MH)with a (gas/diesel) size engine ( ). My GVW is ( ) My mileage towing ( ) without tow.( ).
Compare apples and oranges.

I have a 34' winnebago with a 454 gas engine, 16,000 GVW,My mileage without tow is 10 MPG. Towing 8-9 MPG.


Posted By: Alan_Hepburn on 02/21/11 05:16pm

EndeavorV10 wrote:


When the pump shuts off doesn't affect MPG, it may affect distance between fill-ups, but really, in something this big, can't be that much.


When the pump shuts off doesn't physically affect MPG, but it sure affects how many gallons you get at a fillup, and affects the calculation of MPG. Depending on the physical characteristics of your fuel tank, filler hose, etc. an early shutoff can give you maybe 10 gallons less than a late shutoff. For example if you drive 400 miles and the pump shuts off after pumping 55 gallons you get almost 7.3 mpg - if it shuts off after 65 gallons you get almost 6.2 mpg. Many RVers would say 1 mpg is indeed a big deal...


Posted By: Kiwi_too on 02/19/11 08:58pm

8 towing or not.


May God bless your travels

Me, The Wonderful Wife
and two Spastic Border Collies
U.S. Army Retired
2013 Tiffin Allegro 36LA
2007 Saturn Outlook, FROG



Posted By: GMCK154X4 on 02/19/11 09:58pm

Not nearly enough!


Posted By: PAIRAJAYS on 02/21/11 07:51am

I guess I never got mine broke in. 36', '02 Endeavor with Cummins 330 HP. Started at 7.5 MPG, ended with 7.5 MPG after 50,000 miles. That pretty much tells me that "break in" is an old wives tale.

Jim


Posted By: Johnny Hurryup on 02/21/11 08:47pm

'99 33 ft class a ,no slides. Ford V10 ,weighs only 13k lbs. steady highway...9.3 mpg....hilly backroads 8.0 mpg


Posted By: horizon36 on 02/21/11 08:53am

Our engine is finally loosening up after 36,000 miles and my mileage has been creeping up some. I cruise at 62+/- and if no head or significant cross wind I will get 10 mph while towing the Jeep. If I have mixed terrain with some hills it drops to 8.5 or so.


Live Long and Prosper.

Home is where we park it.
FT since August 2010

'02 Itasca Horizon 36LD
'02 Jeep GC toad



Posted By: ticat900 on 02/19/11 07:11pm

messer109 wrote:

The question should be stated. I have a (xx foot MH)with a (gas/diesel) size engine ( ). My GVW is ( ) My mileage towing ( ) without tow.( ).
Compare apples and oranges.

I have a 34' winnebago with a 454 gas engine, 16,000 GVW,My mileage without tow is 10 MPG. Towing 8-9 MPG.


Thats very good and true and exactly as i did when i stated my mileage


Posted By: Seanman on 02/20/11 01:18pm

REALLLLYYYYY BAD! Lucky to get 5 with the boat in tow.


87 Holidy Rambler Imperial
P30,454,TH400,Gear Vendor,Thorleys
FMCA F381797



Posted By: wny_pat on 02/19/11 09:21pm

Alan_Hepburn wrote:

timmac wrote:


What does the slope of the gas station pavement have to do with gas mileage.


When the motorhome is absolutely level the fuel inlet is in a specific position relative to the tank. If the inlet is higher than that position (i.e. the front of the motorhome is lower than level) then the pump will shot off later; if the inlet is lower than normal (i.e. the front of the motorhome is higher than normal) then the pump will shut off sooner.
It will balance out in the long run.


“All journeys have secret destinations of which the traveler is unaware.”


Posted By: wny_pat on 02/23/11 08:57am

Alan_Hepburn wrote:

EndeavorV10 wrote:


When the pump shuts off doesn't affect MPG, it may affect distance between fill-ups, but really, in something this big, can't be that much.


When the pump shuts off doesn't physically affect MPG, but it sure affects how many gallons you get at a fillup, and affects the calculation of MPG. Depending on the physical characteristics of your fuel tank, filler hose, etc. an early shutoff can give you maybe 10 gallons less than a late shutoff. For example if you drive 400 miles and the pump shuts off after pumping 55 gallons you get almost 7.3 mpg - if it shuts off after 65 gallons you get almost 6.2 mpg. Many RVers would say 1 mpg is indeed a big deal...
The only cure would be to fill at the same pump, parked in the same position when fueling every time. Kind of hard to do when you are traveling. But like I said before, it all balances out over the long run. Now I have read of people who use their hydralic leveling jacks and lift up one side of the coach to fuel up. But I do not recommend that at all! I'd be afraid of popping out a windshield!!!

* This post was edited 02/23/11 09:51am by wny_pat *


Posted By: BudParrish on 02/20/11 09:55am

Amazingly, I get better mileage when I'm towing my >5700lb Z-71 that when I'm toad-less. I can't really explain it, tho.

I drive 55-62 whether pulling or not. I get about 8.2 toadless, and around 9.6 towing.

This is with a 2008 Monaco Diplomat SFT 8.9L 400hp turbo-diesel.

Bud


Posted By: cman60 on 02/23/11 08:42am

1996 Fleetwood Flair 28ft, gas 454, pulling a 24ft enclosed trailer full of motorcycles, getting 8-10 mpg diving 55-60 mph.


Every day is a good day to ride, just some better than others.
1997 Fleetwood Flair
Towing either a 24 or 14 ft trailer full of motorcycles


Posted By: islandvagabonds on 02/23/11 08:32am

2003 Discovery 39S Cat 3126. Recently travelled with a 38' Suncruiser Workhorse chassis for 700 miles. Difference in fuel cost for the same trip was $12.00 which could be due to tank level when filling. Average of 8.5 miles per US gallon or 10 per Imperial gallon.


Posted By: EndeavorV10 on 02/21/11 07:42am

Alan_Hepburn wrote:

timmac wrote:


What does the slope of the gas station pavement have to do with gas mileage.


When the motorhome is absolutely level the fuel inlet is in a specific position relative to the tank. If the inlet is higher than that position (i.e. the front of the motorhome is lower than level) then the pump will shot off later; if the inlet is lower than normal (i.e. the front of the motorhome is higher than normal) then the pump will shut off sooner.


When the pump shuts off doesn't affect MPG, it may affect distance between fill-ups, but really, in something this big, can't be that much.


Posted By: catallison777 on 02/21/11 11:16am

I get about 7.0 to 7.5 running 75-80 with the jeep

Running about 65 i get 8.0.


2003 Damon Ultrasport 3873
Onan Quietdiesel 7500
Caterpillar 3126E
Allison Transmission 3000
Honda EU2000i
1992 Jeep Wrangler(Towed 4 Down)



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