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07-22-2017, 08:44 PM
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#29
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by dlovitt
Did not mean to offend you. It's just that DEF usage is a function of fuel usage which is a function of weight and engine size. No disrespect intended.
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If you're getting 7 mpg with and ISL and 7 with an ISX then shouldn't the DEF usage be the same using your scenario?
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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07-22-2017, 09:01 PM
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#30
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D333RLT Tower
Texas Boomers Club Entegra Owners Club
Join Date: Jun 2009
Posts: 2,075
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Quote:
Originally Posted by Mr_D
If you're getting 7 mpg with and ISL and 7 with an ISX then shouldn't the DEF usage be the same using your scenario?
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You might think so but my ISX uses about 2X what my ISL anthem did.
__________________
[COLOR=red]2022 KZ Durango D333RLT
[FONT=Arial][COLOR=red] Towed by2022 F-250 Lariat 7.3 Godzilla gas 10 speed , Texas Boomers RV Club
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07-22-2017, 09:09 PM
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#31
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Senior Member
Join Date: Apr 2004
Location: Stillwater, Ok
Posts: 4,812
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Quote:
Originally Posted by dlovitt
You might think so but my ISX uses about 2X what my ISL anthem did.
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Yep, about the same on mine.
__________________
2020 New Aire 3543
2018 Lincoln MKX
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07-23-2017, 03:42 PM
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#32
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Registered User
Join Date: May 2017
Posts: 2,582
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Mine too, it's definitely not linear.
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07-24-2017, 01:57 PM
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#33
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Junior Member
Entegra Owners Club
Join Date: Apr 2017
Location: TX
Posts: 6
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Quote:
Originally Posted by paulp2354
I just got back from a 2241 Mile trip and I have a 2016 Cornerstone with a 600 Cummins and used 15 Gals of DEF seems high to me, is this normal or high. Just had a software update before the trip at Cummins.
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We have a 2017 Cornerstone and just did almost a 3000 mile trip and use 15.7 gallons at DEF our mileage is about 7.6 miles per gallon driving about 62 miles an hour so that sounds about right all in the flatlands no mountain driving .
__________________
Marvin & Belinda & (2 long haired Dachshunds)
2017 Cornerstone 45B Topaz
2016 Jeep Grand Cherokee Summit 
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