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Convinced On Buying a '15 F350...

I_m_Rick_James
Explorer
Explorer
....and changed my mind the day I went to order the truck. I took a '15 F350 6.7 for a test drive to make sure it was what I wanted and left without placing the order. The interior was nearly identical to my '08, the mileage (as displayed on the dash) was around 11mpg,60k mile warranty, and I just couldn't get used to the grill. After careful consideration I elected to remain with Ram and picked this up.

'14 3500 Aisen, Laramie with all options excepting a sunroof. The '15 Powerstroke will absolutely destroy the Cummins in a drag race but I could care less about that aspect. So far my highway mileage is showing 21 (not hand calculated) which is considerably better than the '15 Ford or my '12 Ram.
'08 Ford F350 LB,CC, 4x4 King Ranch, Reunel front and rear winch bumpers, Warn 12k winch
'12 Voltage 3900
'10 Polaris Ranger Crew
BAN Ib516, rick83864
35 REPLIES 35

cummins2014
Explorer
Explorer
DodgeVoltage wrote:
jus2shy wrote:
FishOnOne wrote:
I would like know what your fuel economy is over a tank of diesel which should include a regen.

The 21 mpg numbers are starting to sound like Bionic Man's mpg numbers. :W


Hey Guys, just so you know, Cummins actually has a very good passive regen strategy and also seems to have the DPF closer to the engine than Ford does on the Super duty. If you maintain average MPH speeds over 40 or use your truck to frequently tow, you may never witness an active regeneration. I seem to have a regen event about every 1,000 miles on the average. The truck certainly runs differently when it does regen. During this summer, it's been more than 1,000 miles since my last active regen, namely because I've been driving to the coast or visiting family on the weekends getting good long drives in that passively regenerate the DPF. Feel free to check my fuelly account by clicking the link in my sig.


I have a 2010 Ram 3500 w/ Cummins and a 2009 GMC 2500 w/ Duramax and have never noticed a regen on either of them. Both have about 40,000 miles on them. I wouldn't know what to look for or if it would feel different while it's happening.



With just over 6K on my 2014 Ram, I too have never been aware of a regen. My first road trip with less then 1K on it I got 19.4 hand calculated. Towing just over 13K I get just over 10-10.5 hand calculated. So far running empty I get anywhere from 19.2-21.5.

jus2shy
Explorer
Explorer
DodgeVoltage wrote:

I have a 2010 Ram 3500 w/ Cummins and a 2009 GMC 2500 w/ Duramax and have never noticed a regen on either of them. Both have about 40,000 miles on them. I wouldn't know what to look for or if it would feel different while it's happening.


Basically, you'll see your fuel economy dip. Your RPM's when you're moving slower or idling in a drive thru will be elevated a tiny bit as well. My truck runs smoother because of regeneration but it certainly drops my fuel economy when it does hit. But it doesn't seem to hurt that bad and the few times I've observed a regen, they tend to last for only 5 or 10 minutes.
E'Aho L'ua
2013 RAM 3500 Crew Cab 4x4 SRW |Cummins @ 370/800| 68RFE| 3.42 gears
Currently Rig-less (still shopping and biding my time)

DodgeVoltage
Explorer
Explorer
jus2shy wrote:
FishOnOne wrote:
I would like know what your fuel economy is over a tank of diesel which should include a regen.

The 21 mpg numbers are starting to sound like Bionic Man's mpg numbers. :W


Hey Guys, just so you know, Cummins actually has a very good passive regen strategy and also seems to have the DPF closer to the engine than Ford does on the Super duty. If you maintain average MPH speeds over 40 or use your truck to frequently tow, you may never witness an active regeneration. I seem to have a regen event about every 1,000 miles on the average. The truck certainly runs differently when it does regen. During this summer, it's been more than 1,000 miles since my last active regen, namely because I've been driving to the coast or visiting family on the weekends getting good long drives in that passively regenerate the DPF. Feel free to check my fuelly account by clicking the link in my sig.


I have a 2010 Ram 3500 w/ Cummins and a 2009 GMC 2500 w/ Duramax and have never noticed a regen on either of them. Both have about 40,000 miles on them. I wouldn't know what to look for or if it would feel different while it's happening.
2010 Dodge 3500 Mega Cab Cummins Diesel DRW
2009 GMC 2500HD D/A Crew Cab
2012 Dutchmen 3795 Voltage Epic Package
2012 Smart Fortwo Passion
2017 Smart Fortwo Proxy
AD USAF 1996-2011 1700+ hrs E-3B/C AWACS
NYANG 2011-Present


K-State Wildcats!

rjstractor
Nomad
Nomad
GoPackGo wrote:
I thought the EPA controlled the testing. Some kind of specific start-up, warm-up, and then a specific driving loop consisting of a set number of city miles and highway miles at controlled speeds. The average is what you see on the sticker. I'll have to look at a sticker next time I'm at a dealer.


Since the EPA only requires mileage ratings on vehicles under 8500 GVWR (I think) you won't see any mileage figures posted on 2500/3500 series pickups.
2017 VW Golf Alltrack
2000 Ford F250 7.3

texasclarks
Explorer
Explorer
Congrats on the new truck. I love the color...someday my DW will allow me to have a garage big enough to park such beautiful toys 😉
Posts are for entertainment purposes only and should not be construed as endorsement or recommendations. YMMV!

Steven & Stacie, plus 2 ('02 & '07)
'04 Suburban 2500, Quad Seats, 8.1L, 3.73
'09 Rockwood 8313SS

Texas not just a State, but a State of mind!

GoPackGo
Explorer
Explorer
I thought the EPA controlled the testing. Some kind of specific start-up, warm-up, and then a specific driving loop consisting of a set number of city miles and highway miles at controlled speeds. The average is what you see on the sticker. I'll have to look at a sticker next time I'm at a dealer.

FishOnOne
Nomad
Nomad
45Ricochet wrote:
Yeah I agree, they should list some kind of MPG on the sticker. But then again who controls what each manufacture prints on em, similar to not following J2807. Heck the Ford, Chevy and Ram bean counter would all fudge the numbers :W
21 is pretty impressive though, I'm lucky to hit 20, most of the time it's 19-20 highway with my gas app with summer fuel. Not so lucky in winter 😞


I believe there's a EPA standard for calculating fuel economy. Some are overstated especially hybrids.
'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs "270k Miles"
'16 Sprinter 319MKS "Wide Body"

I_m_Rick_James
Explorer
Explorer
FishOnOne wrote:
I'm Rick James wrote:
FishOnOne wrote:
I would like know what your fuel economy is over a tank of diesel which should include a regen.

Me too, I have yet to notice a regen but it only has 500 miles thus far. If you do some forum reading those numbers are pretty well aligned with what others have experienced. I also mentioned that the mileage was based upon what the EVIC was displaying so I'm sure it's a bit off.
FishOnOne wrote:
The 21 mpg numbers are starting to sound like Bionic Man's mpg numbers. :W

I have zero motivation to be disingenuous over my mileage claims. I derive no validation for my truck purchase by posting false information on the internet. If you look back at my post history I've even made threads highlighting how poor my '12 Ram mileage was while towing.


I've read your post's and believe you're a straight shooter... If your truck does indeed make 21 mpg (assuming Hwy) I'm impressed, but I've yet to read or hear of such numbers on a consistent basis.

Looking forwards to future fuel economy reports.

Here's a link to a lengthy thread on mileage results from the '13-'14MY Ram CTD, take it for what it's worth.
http://www.cumminsforum.com/forum/2013-general-discussion/593358-2013-mileage-thread.html
'08 Ford F350 LB,CC, 4x4 King Ranch, Reunel front and rear winch bumpers, Warn 12k winch
'12 Voltage 3900
'10 Polaris Ranger Crew
BAN Ib516, rick83864

45Ricochet
Explorer
Explorer
Yeah I agree, they should list some kind of MPG on the sticker. But then again who controls what each manufacture prints on em, similar to not following J2807. Heck the Ford, Chevy and Ram bean counter would all fudge the numbers :W
21 is pretty impressive though, I'm lucky to hit 20, most of the time it's 19-20 highway with my gas app with summer fuel. Not so lucky in winter 😞
2015 Tiffin Phaeton Cummins ISL, Allison 3000, 45K GCWR
10KW Onan, Magnum Pure Sine Wave Inverter
2015 GMC Canyon Toad

Previous camping rig
06 Ram 3500 CC LB Laramie 4x4 Dually 5.9 Cummins Smarty Jr 48RE Jacobs brake
06 Grand Junction 15500 GVWR 3200 pin

Powerdude
Explorer
Explorer
How long is that thing...lol.

Looks like a locomotive.
2016 F250 CCSB 4x4 6.2L
2001 Lance 820

GoPackGo
Explorer
Explorer
Frankly, now that all three of the big diesel trucks are dripping with HP, I wish the manufacturers would pull out all the stops and start devoting more attention to maximizing fuel economy. I love the HP wars as much as anybody but I was real happy with the power of my '02 Duramax and am now downright ecstatic with my '13 Ford. I fulltime and pull 14,000 pounds and I can pretty much go up any hill as fast as I want to, as I'm sure would be the case if I was driving a Chevy or Ram. Do I care if the newest models have a big HP increase ? Not if it means a big impact on fuel economy.

Now I want another 1 mpg towing my 5th wheel !

I almost don't want to say this but I wish these trucks came with the EPA mpg sticker on the window. I do know why they don't. But it would be one more comparison tool when shopping for a new truck, or to compare previous years to the current one of the same model. When Ford bumps up HP by 10%, then any negative effect on mpg would show up on the sticker and new owners would not get a surprise. In fact, maybe a new window sticker for the F350s and comparables would include a standard tow test showing the mpg that results from towing 10,000 pounds at 55 or 60 mph.

Tim

jus2shy
Explorer
Explorer
FishOnOne wrote:
I would like know what your fuel economy is over a tank of diesel which should include a regen.

The 21 mpg numbers are starting to sound like Bionic Man's mpg numbers. :W


Hey Guys, just so you know, Cummins actually has a very good passive regen strategy and also seems to have the DPF closer to the engine than Ford does on the Super duty. If you maintain average MPH speeds over 40 or use your truck to frequently tow, you may never witness an active regeneration. I seem to have a regen event about every 1,000 miles on the average. The truck certainly runs differently when it does regen. During this summer, it's been more than 1,000 miles since my last active regen, namely because I've been driving to the coast or visiting family on the weekends getting good long drives in that passively regenerate the DPF. Feel free to check my fuelly account by clicking the link in my sig.
E'Aho L'ua
2013 RAM 3500 Crew Cab 4x4 SRW |Cummins @ 370/800| 68RFE| 3.42 gears
Currently Rig-less (still shopping and biding my time)

modern_family
Explorer
Explorer
My garage is that clean, no big deal.... problem is, my truck cab would hit the garage lintel and bed would stick out 5 foot! So, it is clean because I can only fit the wives EXPY in a 3.5 car garage.

So, awesome garage.. Oh yeah, nice truck and good luck with her!
2017.. Prime Time Avenger. 32QBI

His.. 2011 F-350, King Ranch, 6.2L. Crew Cab, 4x4, 8' bed, SRW, 11,000 GVWR

Hers..2008 Ford Expedition, King Ranch Heavy Duty Tow, 3.73 gears

Sold.. 2005 Star craft, Travel Star 18SB

Sold.. 2013 Keystone Laredo, 291

FishOnOne
Nomad
Nomad
I'm Rick James wrote:
FishOnOne wrote:
I would like know what your fuel economy is over a tank of diesel which should include a regen.

Me too, I have yet to notice a regen but it only has 500 miles thus far. If you do some forum reading those numbers are pretty well aligned with what others have experienced. I also mentioned that the mileage was based upon what the EVIC was displaying so I'm sure it's a bit off.
FishOnOne wrote:
The 21 mpg numbers are starting to sound like Bionic Man's mpg numbers. :W

I have zero motivation to be disingenuous over my mileage claims. I derive no validation for my truck purchase by posting false information on the internet. If you look back at my post history I've even made threads highlighting how poor my '12 Ram mileage was while towing.


I've read your post's and believe you're a straight shooter... If your truck does indeed make 21 mpg (assuming Hwy) I'm impressed, but I've yet to read or hear of such numbers on a consistent basis.

Looking forwards to future fuel economy reports.
'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs "270k Miles"
'16 Sprinter 319MKS "Wide Body"