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09-02-2016, 02:34 PM
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#21
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Senior Member
Join Date: Aug 2015
Posts: 820
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I tow with mine the majority of the time. Probably 4000-5000 miles between DEF fill-ups.
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09-02-2016, 03:45 PM
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#22
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Senior Member
Join Date: Sep 2013
Location: Texas
Posts: 1,183
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I have about 1800 miles of mixed city / highway / towing. The DEF gauge still reads full but from what I read on the Dodge forums they do that till about 1/2 tank of DEF and from there drop like a rock.
__________________
Joe & Beverly
2014 Ram 2500 CTD, CC, SB
2014 8289WS lifted
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09-02-2016, 04:36 PM
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#23
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Blog: RVroadtripper.com
Join Date: Jul 2012
Location: Near Dallas Texas
Posts: 1,000
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Hard to know for sure. My 2015 GMC 2500 was under GM's free 2 year maintenance and when I did the 4 free oil changes they topped off the DEF tank for free also. I think I've purchase 6 2.5gal bottles at Walmart. Total miles to date is 29,830 and the DEF was topped off just before I got home. If I had to guess, it probably uses about a gallon every 800-1000 miles. I buy the $8.87 Walmart brand or the Pilot J bulk ($2.90 gal.) and that works out to about 1/3 to 1/2 cent a mile.
__________________
2016 Wildcat 295RSX - 2015 GMC 2500HD DblCab Duramax/Allison 4x4 Z71 6.6' Bed
Maxxis 235/80/16E; AirBags w/AirLift1; mor/Ryde Rubber Pinbox; Andersen UltimateII Alum. 5erhitch on Reese Flipball w/Curt 4" offset; LCI Ground Control3; King Dishtailgater; Traveling with 10' Portabote;
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09-02-2016, 07:58 PM
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#24
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Member
Join Date: Sep 2015
Posts: 70
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Quote:
Originally Posted by dea49
Zero DEF!
2006 F350 6.0
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X2
__________________
Gregg & Denise
2006 F-350 CC LB 6.0 Diesel 4x4 DRW
2014 Heritage Glen 366bh
2015 Camping---"162 Nights"
2016--Moved in camper 11/2015 while
getting ready to sell sticks-N-bricks
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09-02-2016, 10:31 PM
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#25
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Senior Member
Join Date: Oct 2015
Location: New Lenox, Ill. (Home of Proud Americans)
Posts: 300
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Quote:
Originally Posted by hbillsmith
Hard to know for sure. My 2015 GMC 2500 was under GM's free 2 year maintenance and when I did the 4 free oil changes they topped off the DEF tank for free also. I think I've purchase 6 2.5gal bottles at Walmart. Total miles to date is 29,830 and the DEF was topped off just before I got home. If I had to guess, it probably uses about a gallon every 800-1000 miles. I buy the $8.87 Walmart brand or the Pilot J bulk ($2.90 gal.) and that works out to about 1/3 to 1/2 cent a mile.
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I found out that my GM dealer was not topping off my DEF tank during my free oil changes.He was only adding 2 gallons when my tank reading was about 20% so he should have been adding about 4 gallons at that point. When I confronted him about it he gave me 2 additional gallons. I think they were trying to save themselves some money by only adding just 2 gallons and not topping it off.
__________________
2015 GMC Denali 3500 4X4 Duramax
2019 Cedar Creek 36CK2 (sold 4/21)
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09-03-2016, 06:14 AM
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#26
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jammer 16
Join Date: Feb 2013
Location: Joplin, Mo
Posts: 101
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I have a 2014 Ram. Last time I figured I used about 1 gallon to 700 miles in everyday driving. Love the gauge Ram puts in their trucks
__________________
2016 windjammer model 3025
2015 Ram 2500 Longhorn Diesel
Traveled 9200 miles in 2015 camping 68 nights
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09-03-2016, 07:12 AM
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#27
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Junior Member
Join Date: May 2015
Posts: 13
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While in Texas I traded the gaser for a 2015 chev duramax and since then I have put 4000 miles on it (half with a 36' trailer) and when I went to top it off it would only take 2.5 gallons.
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09-03-2016, 07:14 AM
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#28
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Senior Member
Join Date: May 2013
Location: Delaware
Posts: 243
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I have a 3500 Chevy with 5 gal tank and get 1000 miles a gal
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09-03-2016, 07:22 AM
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#29
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Senior Member
Join Date: Jun 2013
Posts: 10,833
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I have a 2015 with 30,000 km and have never filled the DEF tank. Its part of free service from the dealer. It only regions every 800 km even when towing. The newer diesel use fuel to kick the temp up more and use less DEF. Strictly Stock engine.
__________________
B and B
2022 Venture RV SportTrek STT 302 VRB Travel Trailer
2018 Heartland Landmark 365 Louisville 5th Wheel
2015 Heartland Bighorn 5th Wheel
2013 FR Rockwood 8289WS 5th Wheel
2012 FR Rockwood 2703 SS Travel Trailer
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09-03-2016, 02:48 PM
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#30
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Senior Member
Join Date: Aug 2015
Posts: 463
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Quote:
Originally Posted by PIGMAN
X2
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Are you bullet proofed?
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09-03-2016, 05:17 PM
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#31
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Member
Join Date: Sep 2015
Posts: 70
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Quote:
Originally Posted by dea49
Are you bullet proofed?
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No, I am not. I guess I should consider myself lucky, but when you run the numbers, I'm in the majority. Only about 12% of the International 6.0 motors had issues. Of course, you hear more from the 12% than the rest of us 88%. I bought my 2006 F-350 truck with 10k on it and last trip coming back from Goshen International Rally, I flipped 205k. I get 17 mpg going back and forth to work and 13.5-14 mpg pulling my 15,000 lb 5er. With the 4.30 rear end and dual rear wheels, it has a GCWR of 26,000lbs. The 6.0 motor has more power than I need as I use cruise to keep it under 65-70mph. Only used tow/haul a couple of times in the mountains.
Like I said, it's been great for us and no issues other than normal wear and tear.
Happy camping!!
__________________
Gregg & Denise
2006 F-350 CC LB 6.0 Diesel 4x4 DRW
2014 Heritage Glen 366bh
2015 Camping---"162 Nights"
2016--Moved in camper 11/2015 while
getting ready to sell sticks-N-bricks
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09-03-2016, 07:24 PM
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#32
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Senior Member
Join Date: Aug 2015
Posts: 463
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Quote:
Originally Posted by PIGMAN
No, I am not. I guess I should consider myself lucky, but when you run the numbers, I'm in the majority. Only about 12% of the International 6.0 motors had issues. Of course, you hear more from the 12% than the rest of us 88%. I bought my 2006 F-350 truck with 10k on it and last trip coming back from Goshen International Rally, I flipped 205k. I get 17 mpg going back and forth to work and 13.5-14 mpg pulling my 15,000 lb 5er. With the 4.30 rear end and dual rear wheels, it has a GCWR of 26,000lbs. The 6.0 motor has more power than I need as I use cruise to keep it under 65-70mph. Only used tow/haul a couple of times in the mountains.
Like I said, it's been great for us and no issues other than normal wear and tear.
Happy camping!!
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Sounds great, I thought I might have been in that 88% but wasn't willing to take the chance after some evidence popped up. I do get virtually the same fuel mileage at those speeds.
I purchased mine 2 years ago with 72K and had just turned 90K with two EGR valve replacements. I tested it and found out that I had a constant 10 degree difference between EOT and ECT so I elected to do a partial Bullet proof. (redesigned EGR and oil coolers) Now both temps are almost always identical.
Take care.
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09-03-2016, 07:35 PM
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#33
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Junior Member
Join Date: Nov 2013
Location: Queen Creek, AZ
Posts: 14
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DEF Use
We can get to zero DEF if we could de-fund the EPA!! I am at under 1 gal per 1000 miles in a 2016 F250. Be sure to set your DEF calculations on the dash to Tow or Normal as needed.
__________________
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09-03-2016, 08:06 PM
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#34
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Senior Member
Join Date: Oct 2012
Location: Cochrane, AB
Posts: 829
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I took our 2016 F350 Dually Lariat for its first oil change at 8000 kms in early July. I'd just placed 2.5 gallons of DEF in to the tank a couple of weeks earlier while towing a 40' full profile 5er. The dealer allegedly filled it up again at the oil change but while I was recently towing through Washington and Oregon I had to out in another 2.5 gallons and when I returned home it took another gallon. So far the total milage for the truck is just under 13,000kms. About half of this has been towing.
Fuel seems to come out at 11mpg (21l/100km) towing and 15mpg (15l/100km) urban/hwy mixed.
__________________
Richard & Diane
2014 Cedar Creek 38FL
2016 F350 Lariat CC DRW
Retired Metropolitan Police (UK)
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09-03-2016, 11:21 PM
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#35
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Global Nomad
Join Date: Sep 2015
Location: In my 36CKTS 5th Wheel
Posts: 811
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I have a 2015 RAM 3500 dually. The DEF tank holds 5 gallons. I fill it when it gets to 1/2 on the DEF gauge. I use 2.5 gallon Walmart. I get 1200-1300 miles per 2.5 gallons.
__________________
Steven J. Scheinin
2015 RAM 3500 4X4 6.7L CTD Dually pulling a
2016 Cedar Creek 36CKTS (Center Kitchen Three Slides)
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09-03-2016, 11:32 PM
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#36
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Member
Join Date: Mar 2016
Location: Alberta
Posts: 87
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It's actually a 5.7 gallon tank and will read full on the gauge when about 90% full. So it's possible to use %10 without the gauge ever moving off full.
But yes 2.5 gallons is roughly half.
Sent from my iPhone using Tapatalk
__________________
2015 MiniLite 2109S
2016 Ram 3500 6.7
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09-04-2016, 03:33 AM
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#37
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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Quote:
Originally Posted by dea49
Zero DEF!
2006 F350 6.0
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Quote:
Originally Posted by PIGMAN
X2
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X3. And I'm an 88%er!
__________________
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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09-04-2016, 04:25 PM
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#38
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Senior Member
Join Date: Aug 2015
Posts: 463
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Quote:
Originally Posted by QC Torpedo
We can get to zero DEF if we could de-fund the EPA!! I am at under 1 gal per 1000 miles in a 2016 F250. Be sure to set your DEF calculations on the dash to Tow or Normal as needed.
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I agree! The EPA should be only an advisory organization for Congress and they should make laws using that information.
Case in point...
My Grand Cherokee gets around 28 mpg with all the emission control. In Australia they get around 50 mpg without it. What is better, save 10% on emissions per gallon or double the mileage per gallon and use 50% less fossil fuels overall? They have these tree huggers bamboozled!
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09-04-2016, 07:31 PM
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#39
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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Quote:
Originally Posted by dea49
I agree! The EPA should be only an advisory organization for Congress and they should make laws using that information.
Case in point...
My Grand Cherokee gets around 28 mpg with all the emission control. In Australia they get around 50 mpg without it. What is better, save 10% on emissions per gallon or double the mileage per gallon and use 50% less fossil fuels overall? They have these tree huggers bamboozled!
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Give you better fuel mileage so it cuts into the oil companies sales?
Emissions and economics is a fine balance, with the scale tipping towards oil companies.
There are other factors in that equation too. Fuel quality and rating is one. PCM flash is another.
__________________
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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