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Old 07-20-2016, 05:37 PM   #1
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2002 Dutch Star 4095 Fuel Mileage

We just purchased a 2002 Dutch Star 4095 (stored inside with 56k miles) with a Cummins 350ISC and Allison 3000 transmission. As we did with our previous dp 15 years ago, we will work to determine the most fuel efficient highway speed. I am guessing it to be in the 55 - 65mph range.
I will appreciate any feed back from owners of the same or similar Newmar dps on what you found to be the most fuel efficient highway speed. This will give me a reference with which to start.
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Old 07-20-2016, 10:59 PM   #2
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Airlifter...... My '02 DS has the 330 Cat on a FL chassis. When we're moving we are towing our car, so we're moving 35000 Lbs. I don't search for the best economy speed, but rather the speed where the coach seems to run most smoothly, the best apparent balance of HP and torque. I cruise at 1650-1700 rpm, which yields 63-65mph. After adjusting for Gen use, our four-year 25000 mile average fuel economy is 7.4 mpg.
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Old 07-21-2016, 09:05 AM   #3
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02 Dutch Star 3852 330 Cat Freightliner towing total weight about 32,000 lbs.

Also keep RPM around 1650 to 1700 - around 100 to 150 RPM after it shifts into 6th gear (62 to 65 mph). Fuel mileage is around 7.8 mpg.
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Old 07-21-2016, 09:27 AM   #4
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2002 Dutch Star 4095 Fuel Mileage

My normal speed is 55-60 MPH unless I'm on an interstate or four lane highway and then, depending on road conditions I might do 62-65 MPH.

Typical average is 8.5 but can do as high as 9+ as seen in my photo of my TripTec screen. This shot was after traveling through BC in varying mountainous terrain.

Prior to installing the Banks kit, my average was 7.5 MPG. I am pushing 40,000 Lbs.
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Old 07-21-2016, 09:40 AM   #5
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Airlifter, different coach, different engine, but a DP with a Cummins none the less. I allow the transmission to shift into 6th gear which for me is at 59 mph, I will run up to 62 ish and hold it there. If we are running a trip which is mostly on flat ground I will average 10.05, if running mountains I will average 8.7. In the mountains when I push it to pull the hills with traffic at 70 mph it will drop to 7.1 mpg (that is the worse I have ever gotten). Coach loaded with toad 34,600 lbs, Cummins ISL400.
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Old 07-21-2016, 11:20 AM   #6
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Just checked mine running generator and pulling ford edge. Got 8,6 on 2003 dutch star on highway
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Old 07-21-2016, 05:52 PM   #7
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Quote:
Originally Posted by kvm1970 View Post
Just checked mine running generator and pulling ford edge. Got 8,6 on 2003 dutch star on highway


Also have 2003 4005 DSDP 350 HP Cummins, towing a 2013 Ford Edge running genny and getting around the same mileage. If I recon mpg in Imperial gallons I get even better

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