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Old 11-28-2013, 11:36 AM   #15
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What ever you buy 3 things will impact your MPG... Speed, terrain, and wind... the SINGLE biggest impact is what speed you choose to drive at... At 60 MPH on cruise control I consistently get ~7.5 MPG... yesterday driving into the wind all day and a 30 minute delay in traffic on the interstate I was down to 6.1MPG. Also, when ever possible, select "Economy" on your Allison transmission...

Here's a link to a Cummins White Paper: http://cumminsengines.com/uploads/do...whitepaper.pdf

Ken & Anita
2011 Newmar Essex, 45'- 4522, Cummins 500 ISM, 2013 CRV, RVI2 Brake with TPMS
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Old 11-28-2013, 12:40 PM   #16
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Originally Posted by kees boode View Post
Question. we facing retirement and thinking about upgrading from our 1994 holiday rambler navigator (is still in perfect shape) to a 40 F 2004 holiday rambler navigator PBT. Now I like to know what is the MPG for a unit like this and what are the pro and cons (if there are any). Thanks for your response.
My wife and I have lived and traveled full time in an '03 Monaco Signature which is a fairly close cousin of the HR Navigator. Ours has the Cummins ISM and on average east coast terrain we can beat 8 mpg. I tend to drive 60-62 on CC on flat ground. In rolling hills, I let it run up to just over 70 on down hill runs and finish normal climbs in high 50s. This is Interstate driving.

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2003 Monaco Signature
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Old 11-28-2013, 01:19 PM   #17
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We have a '98 Fleetwood Discovery and pull a CR-V. She has a Cummins 5.9 ISB 275 with a 5-Star tune that boosts the power to 340hp. Last trip averaged 11mpg @ 60mph (my usual) and 10mpg @ 65, flat terrain coming and going, wind was not a factor.

Love the 5-Star tune!
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Old 11-29-2013, 07:44 PM   #18
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I think if your a true Rv'er,and you love rving,the cost of fuel is something you learn to over look quickly,I did,I would pull my pickup up to the pumps,put in $80.00 worth of gas,Go up the road another 50 miles or so and get a motel room for $135.00 a night.So to me it's same money.It just seems like in the parks your with friends and family,i don't get that scence in a motel.
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Old 11-29-2013, 08:15 PM   #19
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After a bit, we got into a rythm of travel, and MPG means nothing. You go from point A to point B, you fill the tank, and it is what it is. You can flex it a tad with your right foot, but that's about it.

Happy trails!
Dave and Nola, RVM1
The Journey is Our Destination!

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Old 11-30-2013, 01:50 PM   #20
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I drive a 1992 HR Aluma Lite. I have never calculated MPG. I do what makes sense as far as weight, engine maintenance, etc... I can, however, tell you how many

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Old 11-30-2013, 10:25 PM   #21
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We get just under 6mpg putzing around the Colorado mountains. South or east and we will get between 8.0 and 8.5mpg. Like most in this thread, we stick to 60mph. \ken
Ken & Deb (WIT Club, FMCA, SKP, Harvest Hosts, and grateful volunteers with SOWERs)
2005 Winnebago Vectra 40FD w/400ISL and Allison 3000MH on Freightliner's Evolution chassis, Onan QD7500, 1000w Renogy solar, BlueOx tow gear, and 2015 Cherokee TrailHawk toad.
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Old 12-01-2013, 10:13 AM   #22
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Originally Posted by stan5711 View Post
I think if your a true Rv'er,and you love rving,the cost of fuel is something you learn to over look quickly,I did,I would pull my pickup up to the pumps,put in $80.00 worth of gas,Go up the road another 50 miles or so and get a motel room for $135.00 a night.So to me it's same money.It just seems like in the parks your with friends and family,i don't get that scence in a motel.
I am going to respectfully disagree with stan a little bit here. I agree if you are going to be doing the class A route worrying about mileage is going to be counter productive. Where I disagree with stan is trying to compare to taking a trip with your pickup and staying at hotels. When you factor in the cost of the unit, insurance, cost of upkeep and cost of campgrounds you are going to be out a lot more money than a trip with your pickup. When I started thinking about class a units ( 10 years before I bought one) I did the math and I would have to stay in one full time for 10 yeas before the cost was equalized. At that time I did not compute the cost of maintenance and upkeep I was just looking at the purchase price and cost of campgrounds. In my opinion you buy class A because of the convenience and comfort. When you are making a decision based on convenience and comfort and you are spending tens of thousands and a lot of the time hundreds of thousands of dollars. the difference in mileage pales in comparison. The difference between 5 miles per gallon and 8 miles per gallon on a 1000 mile trip is about 300.00. 300 dollars is not a lot of money if you just spent 100,000 on a used coach or even 300,000 on a new one.
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Old 12-01-2013, 04:09 PM   #23
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My DW and I have a 40PBT Navigator. We get about 45-60 nights in it each year. We very much enjoy the unit.. We purchased it with 40,000 miles on it back in 2008. Today we have approximately 66,000 miles. Maintenance has been reasonable, we do change the oil and filters each year on the engine and generator. The Cummins ISM motor runs strong and there is no better feeling than knowing you have enough power when you need it. I have tracked the MPG since we got it and are between 6.5 and 8.5. The variations come from driving in various weather, running the generator and/ or aqua hot on diesel and mountains vs flat land. We have never been disappointed with the MH, we have had it serviced at Monaco in Oregon and Robert Christ in Mesa, both have treated us well. I'd be happy to discuss any questions you have about the MH?

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