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03-15-2017, 10:11 AM
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#1
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Junior Member
Join Date: Mar 2017
Posts: 2
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Which Diesel Truck to Buy- MPG and Range Critical
Purchased a new travel trailer last Summer and need to upgrade tow vehicle. Almost ran out of gas during first long trip so MPG/Range is important. Which diesel truck has the best MPG? Test drove a 2015 Silverado High Country yesterday. On a short test drive around town, flat terrain it only got 10.6 MPG. A Ford F250 on a longer test drive averaged close to 18 MPG. Also looking at Dodge RAM which was somewhere in between. Pulling a smaller TT so towing capacity is not an issue. Just don't want to stop any more often than I have to.
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03-15-2017, 10:17 AM
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#2
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Insert witty title here
Join Date: Apr 2016
Location: About 30 miles west of Beantown.
Posts: 4,034
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My Silverado 2500HD diesel gets around 17MPG when not towing but that's mostly highway. Since I only bought it a couple of months ago, I haven't towed the TT with it yet but the general consensus of people I spoke with said I can probably get 13 - 15MPG while pulling my 8000lb trailer. It has a 32 gallon tank so 400 miles between fills while towing seems doable.
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2021 Transcend Xplor 247BH
Husky WDH with Sway Control
2021 Chevy Silverado 2500HD LT 6.6L V8 Duramax
Forever in my memory. Forever in my heart.
Laurie J. Wood 3/22/67 - 8/23/19
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03-15-2017, 10:19 AM
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#3
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Senior Member
Join Date: Sep 2016
Posts: 168
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I have a 2012 RAM 3500 TCD 4x4 pulling a 25' Cruise-Lite. On flat land, at highway speeds, I average 9 mpg.
YMMV
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03-15-2017, 10:20 AM
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#4
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Senior Member
Join Date: Feb 2015
Location: in my new 29hfsxlr
Posts: 1,658
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Quote:
Originally Posted by BruceKessler
Purchased a new travel trailer last Summer and need to upgrade tow vehicle. Almost ran out of gas during first long trip so MPG/Range is important. Which diesel truck has the best MPG? Test drove a 2015 Silverado High Country yesterday. On a short test drive around town, flat terrain it only got 10.6 MPG. A Ford F250 on a longer test drive averaged close to 18 MPG. Also looking at Dodge RAM which was somewhere in between. Pulling a smaller TT so towing capacity is not an issue. Just don't want to stop any more often than I have to.
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you need to go test drive all again then buy the chevy . you can't get true fuel economy just by a simple test drive and going off the mpg rating in the cluster . most checy owners will tell you they get between 18 and 22 mpg all will go down to 13 or less when towing
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03-15-2017, 10:27 AM
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#5
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Senior Member
Join Date: Aug 2013
Posts: 7,916
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My old 2005 Dodge 5.9L 4X4 got 13.6 in 900 mile return trip from Ohio pulling a 10K 5er. I was pleased, but not happy... 16 MPG would have made me happier.
BTW I don't drive fast either...
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2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas
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03-15-2017, 10:29 AM
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#6
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Senior Member
Join Date: Oct 2012
Location: Oregon
Posts: 1,002
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03-15-2017, 10:38 AM
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#7
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Senior Member
Join Date: Jan 2016
Location: x
Posts: 12,423
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I have had ford and Ram The F350 got good milage and very pleasant ride, the Ram gets great milage not as soft of a ride as the Ford but I sure like the cummins eng better.
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Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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03-15-2017, 10:44 AM
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#8
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Who Dares, Wins
Join Date: May 2012
Location: Chester County, PA
Posts: 7,063
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While my chevy is getting 17 with my typical drive, up to 19 when it us mostly highway (did have one time where I got 20 but it was 100% highway) towing I get 10 to 13 depending on the traffic and terrain. I drove from where I am in PA to well into OH on one tank of diesel. Prob somewhere around d the 400 or so miles as well.
I have always heard dodge is the best, then Chevy then Ford for economy. My friend, who has a king ranch 350 only gets at best 16 when highway, that is not towing. I do not know his towing when he is pulling his car trailer.
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Pat, Jen, Heather & Sapphire, the head mouser.
2015 Chevy HD D-Max
2022 Impression 315MB
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03-15-2017, 10:56 AM
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#9
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Ret E-9 Anchor-clanker
Join Date: Jul 2012
Location: Genoa, ILL
Posts: 1,476
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I would also look at size of gas tank. My F-250 XLT 4 door 6.7 diesel has the 6' bed and the smaller size tank. If I had bought the 8' bed type it would have had the larger tank. I now looking at the external tank for the bed.
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Don & Dona W/yorkies Gizmo, Master Chief, & Tali
2011 Flagstaff 8528 BHSS 2015 Ford 6.7 XLT
2010 Full Timers & Still Going
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03-15-2017, 11:00 AM
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#10
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Who Dares, Wins
Join Date: May 2012
Location: Chester County, PA
Posts: 7,063
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Good point. Mine is 36 gallons. I can get an aftermarket stock replacement tank with 55 gallons or various bed ones (like everyone else) I am sure other company make the same for each truck. I remember one person posting here with a Ford I think, diesel, and it only had a 20 or so gallon tank...
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Pat, Jen, Heather & Sapphire, the head mouser.
2015 Chevy HD D-Max
2022 Impression 315MB
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03-15-2017, 11:01 AM
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#11
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Senior Member
Join Date: May 2016
Location: Yellowknife
Posts: 1,162
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Are you buying new or used? All new diesels need DEF which results in better MPG than the DPF only years. As for which gets better mileage I'm not sure, but my guess is they probably aren't all that different. Just getting diesel will result in better MPG towing than a gasser.
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2007 Rockwood 2701SS
2017 Ram 2500 Granite Crystal SAP Laramie 6.7L
2014 Triumph Bonneville. NH Togas, tuned
1953 GMC 9314
1982 GoldWing Interstate
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03-15-2017, 11:04 AM
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#12
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Ret E-9 Anchor-clanker
Join Date: Jul 2012
Location: Genoa, ILL
Posts: 1,476
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Mine has the 24gal tank. Dealer said he would install a larger (35gal) OEM tank for the 6' bed but for $2600 I can buy a lot of gas.
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Don & Dona W/yorkies Gizmo, Master Chief, & Tali
2011 Flagstaff 8528 BHSS 2015 Ford 6.7 XLT
2010 Full Timers & Still Going
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03-15-2017, 11:15 AM
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#13
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Senior Member
Join Date: Jul 2013
Location: Oregon
Posts: 716
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+1 on tank size!
My 2004 GMC SB only has a 26 gallon tank which is fine when empty at about 21-22 MPG. When towing our trailer however, that MPG drops to about half...which means I can't go more than about three hours before needing to figure out the next stop. This gets old fast when on LONG trips, but luckily we rarely travel more than a couple hours from home.
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'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2021 Solitude 310GK w/FBP
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)
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03-15-2017, 11:25 AM
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#14
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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They're all good these days.
My 2015 Chevy 2500 got 23 mpg, verified, on freeway when not pulling. WHAT you pull varies your mpg so much, what I got, or what someone else got, is probably not too exact. But I got about the same thing using that to pull a 29 foot bumper pull trailer, that I get now with a dually GMC and a fifth wheel........maybe 12 at best.
If you got 10 on a 2500 diesel GMC driving around town, something is bad, bad wrong.
I will always buy GMC. But others are just as loyal to theirs. Used to be a big difference. Now, not so much. They're all nice.
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"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
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03-15-2017, 11:32 AM
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#15
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Senior Member
Join Date: Aug 2013
Posts: 7,916
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Quote:
Originally Posted by BandJCarm
They're all good these days.
My 2015 Chevy 2500 got 23 mpg, verified, on freeway when not pulling. WHAT you pull varies your mpg so much, what I got, or what someone else got, is probably not too exact. But I got about the same thing using that to pull a 29 foot bumper pull trailer, that I get now with a dually GMC and a fifth wheel........maybe 12 at best.
If you got 10 on a 2500 diesel GMC driving around town, something is bad, bad wrong.
I will always buy GMC. But others are just as loyal to theirs. Used to be a big difference. Now, not so much. They're all nice.
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true.... some people drive like maniacs. A friend drove my truck(6 spd) I think he forgot how to shift... he was always about 1-2 gears behind my gear changes and left in a gear longer than me in stop and start traffic. I usually shift at 15-1800 rpms when not towing and prolly 2K when towing.
__________________
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas
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03-15-2017, 11:58 AM
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#16
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Senior Member
Join Date: Nov 2014
Posts: 1,179
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I doubt fuel economy is really the problem. Short bed equals smaller fuel tank.
Get a long bed anything. Heck, my Ram dually only gets 10.5-11.5 towing, but with 35 gallons of fuel that is still over 350 miles between fullups.
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03-15-2017, 12:20 PM
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#17
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Junior Member
Join Date: Mar 2017
Posts: 20
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2016 F250 diesel flat travel w/o trailer 18 - 20 mpg. With 36 ft FW average 10 - 11.
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03-15-2017, 12:27 PM
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#18
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Senior Member
Join Date: Nov 2007
Posts: 145
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milage
I added a 37 gallon in bed gravity fed tank to the 36 gallon truck tank and i just went below 1/4 tank with 650 miles on this fill up but I know i did not get a full fill up on the aux tank the last time I filled it. I only got 32 gallons to go in because of the slant of the pavement by the pumps.....
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03-15-2017, 12:38 PM
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#19
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Senior Member
Join Date: Sep 2014
Location: Western AZ
Posts: 2,404
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Just got back from AZ.(i am around Sacramento) averaged 13.4 pulling 8k salem 27RKSS. From here to Los Angeles with no TT i get 20.8
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03-15-2017, 12:45 PM
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#20
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Member
Join Date: Jun 2016
Posts: 40
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I love my 2015 ram dually 6.7 but it does use def. I get 8 - 10 when pulling my 16k (gvwr) (42ft) 5er and 14 - 15 mpg when not. I replaced the OEM 28 gal with a 55 gal. Thinking of going to Alaska
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Robert Shorter
2015 Dodge 3500 DWD
Blue Ridge 3600RS
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