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Old 12-02-2011, 04:04 AM   #1
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Fuel mileage?

I am selling my Viking Motor Yacht and am contemplating the purchase of a used motorhome, class A diesel pusher. I am looking at a variety of brands, possibly a Monaco with a Cummins or Caterpillar, length of 37-45 feet. Can anyone tell me about what the fuel mileage I could expect?
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Old 12-02-2011, 05:11 AM   #2
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5-6 mpg is the best I've gotten in a 35' gasser...
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Old 12-02-2011, 06:56 AM   #3
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My 36 gets 8.5 towing a Honda CRV.A cat 300 .Probably better than you get with your boat.
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Old 12-02-2011, 06:56 AM   #4
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Hi sailorm0n,
Welcome to iRV2. Assuming all mechanicals are in working order; wind, terrain, weight and speed will determine MPG. My numbers are:
1. Coach and toad are about 37K lbs
2. Cruise at 60 MPH
3. Cummins ISC 330 HP
4. Coach is 40'

My MPG averages between 7.8 - 8.4 There are extremes on the high and low side, but I am usually in this range.
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Old 12-02-2011, 07:46 AM   #5
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At 4000 miles or so, our 38' w/275 Cat pulling a 3500lb toad is a little either side of 8 mpg in the hills and 10 on the flats. We run with the trucks, generally about 65mph.
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Old 12-02-2011, 07:50 AM   #6
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SailermOn.
WELCOME to the Forum. You'll get good INFO here.
I've owned #!. 42' house boat w/ twin 318 chryslers. #2. 27' SEARAYda w/ twin 5.7 mercs. No fuel economy on either. Costs of RV'ing per year equaled the dock fees i paid and had to worry about sinking,wind and driving 70 miles round trip to enjoy the expenses paid. I vote "GO RV"ING & HAVE FUN"
Neither can compare with the Discovery d/p I now travel with. I saved all the fuel reciepts this year and also pulled a '00 Saturn sw. It averaged 10.3 mpg for the camping season. Mine has the 300 Cummins w/ Banks Ottomind system installed. Average weight of the unit (mo/ho & toad) is 26.5k-full tank of fuel & 1/2 tank of water.
Again welcome & post often.
Safe travels...
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Old 12-02-2011, 07:51 AM   #7
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2009 40' Safari Cheetah
34,000 lbs
Avg 60 to 65 MPH
Cat C7 Diesel Pusher
No Toad
8 to 8.5 MPG
Have seen as low as 6 MPG on a recent trip running into strong head winds for a few hundred miles.
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Old 12-02-2011, 07:53 AM   #8
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I have been averaging 8.4 mpg at 64 mph in my 40 ft pusher on the flat Florida roads ,without running the dash air.

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Old 12-02-2011, 08:07 AM   #9
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Cummins 330 ISC. With a little over 4K miles in the last year; the majority of which we pulled an 18' trailer; 1 trip from FL to Ozarks; 1 trip from FL to Tenn; the rest throughout FL; we averaged 7.7
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Old 12-02-2011, 08:31 AM   #10
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Quote:
Originally Posted by Firstpoet View Post
5-6 mpg is the best I've gotten in a 35' gasser...
? Thankfully they are only interested in a diesel and in the range described, can look forward to 8mpg +/- .5 ......
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Old 12-02-2011, 08:51 AM   #11
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Hi and welcome to the forum!

I guess my coach is a bit more thirsty than most of those already listed. I have a 40 DP w/40K miles... Cummins 400 ISL...30K lbs.... 4500 lb toad... 63 mph... 7.1 mpg.

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Old 12-02-2011, 09:22 AM   #12
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Stick with the Viking! Motorhome will just sink before you get it out of the slip. It also will cost you in road taxes everytime you fuel up! Most MH's have a 100 gal tank, unlike boats that may carry as from 400 to 3000 + gals when full ya won't know what to do with the extra credit limit on your card after fueling. What does that Viking get for milage? 30 gal an hour? My guess is .05 to .08 MPG!
My 40ft Winnebago with a 380 Cummins gets 8. But then it only has 2000 miles on it and still needs broken in! I am told I can expect up to 10. It seems the new models that use DEF are experiencing a bit better milage.
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Old 12-02-2011, 09:27 AM   #13
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Quote:
Originally Posted by H. Miller
? Thankfully they are only interested in a diesel and in the range described, can look forward to 8mpg +/- .5 ......
Oh yeah...that's a lot more....
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Old 12-02-2011, 09:48 AM   #14
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I get 8.7 to 9.0 with a ISC in a 40ft coach pulling a Jeep GC doing 1700RPM. I do have an '02 coach and the newer ones are getting less MPG.
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