Anyone have any fuel mileage improvements on their 6.7?

2007 cummins 6.7 liter · 08-31-2008, 07:45 PM

Has anyone noticed any fuel mileage differences since their truck was brand new?

__________________
2007.5 2500 SLT quad cab 6.7 liter totally stock white 3.73 rear differential ratio. 2 wheel drive. Plan on a DPF and EGR delete when warranty ends.

95whtzr2 · 08-31-2008, 08:19 PM

Mine is too new to decide yet... I only have 1400 miles on it. I am getting 12.5 unloaded steady. Haven't pulled anything over 10k yet. I am waiting until early october before I truly break it in.

I am interested in this as well.

__________________

Tom

2008 Dodge 3500/SRW/manual 6spd/CC/LB, B&W tob

My Photobucket

**Jesparza300** · 08-31-2008, 08:26 PM

i get 13 mpg, some times 15 mpg. truck likes to be at 60 for the 15 mpg

__________________
TEXAS COAL ROLLERS SOUTH VP
07.5 dodge ram 2500 4x4 6.7 diesel
68RFE 3.73 gears all stock for now

http://www.cumminsforum.com/forum/texas/

**nick03** · 08-31-2008, 08:31 PM

yes but it doesn't really get better until you get between 14-18k miles. Mine is still improving.

__________________
07 Dodge 3500 6.7 6spd Manual, Inferno Red, ProComps Extreme AT 305-65-17, AFE intake w/ torque tube. MP-8 & Edge Juice W/ Attitude! Valair New12.25" 3400# Dual Disk Ceramic/Ceramic on stock Hydro's, 10 months old w/29,500+miles. A big thank you to John at Holland Court Diesel & Dan at Valair

!

**Jesparza300** · 08-31-2008, 08:35 PM

i have 15K but what kills me is i do mostly stop and go traffic

__________________
TEXAS COAL ROLLERS SOUTH VP
07.5 dodge ram 2500 4x4 6.7 diesel
68RFE 3.73 gears all stock for now

http://www.cumminsforum.com/forum/texas/

**nick03** · 08-31-2008, 08:59 PM

yep my first 16k miles where all city driving and I would avg between 12.5 and 13.3. Then sometimes I would get a tank that I babied it really well to go 15.2, but then I would have a tank do 10.7mpg. The edge and mp-8 really helped my truck be more consistent. Now I get 15+ in the city and 17+ on the highway. Not great but without deletes I think it is pretty good.

__________________
07 Dodge 3500 6.7 6spd Manual, Inferno Red, ProComps Extreme AT 305-65-17, AFE intake w/ torque tube. MP-8 & Edge Juice W/ Attitude! Valair New12.25" 3400# Dual Disk Ceramic/Ceramic on stock Hydro's, 10 months old w/29,500+miles. A big thank you to John at Holland Court Diesel & Dan at Valair

!

Phil Treadway · 11-17-2008, 05:24 AM

I primarey use the truck for pulling, I have several trailers but primarily pull a 16' 3-horse slant gooseneck. I have approx. 38K miles I average around 10 pulling and 14 to 15
empty. I am not very happy with the mileage since my older 5.9 was in the 19 to 20 range empty.
I am looking for ways to improve the mileage on this truck with or without voiding the warranty, any good ideas???
Like I said my older 5.9's did alot better on fuel mileage, this is the 6th cummins that I have owned and the most dissatisfied.

Currently: 07 6.7 Auto, 4WD Big Horn Quad, Long Bed

Last edited by Phil Treadway : 11-17-2008 at 05:30 AM.

chance odaniel · 11-17-2008, 07:37 PM

Even Though Im Illegal My Last Trip I Got 21.5, Thats With A Few Add Ons

__________________
WEST TEXAS DIESEL PERFORMANCE (325-456-0728) 6.7 edge juice w/att. hot unlock, ts-mp8, afe stage II cai, ppe lift pump, h&s 5" turbo back with 6" stack, egr blocked, all the right guages, valair dual disc

08__DODGE · 11-17-2008, 08:30 PM

No add ons to ours and we get 18mpg at 74mph and 20mpg at 62mph. We have 8k on the all stock 6.7 These numbers are hand calculated unloaded and all highway.

Daleco · 11-18-2008, 08:37 AM

i was getting 11-13 highway running 75 at 400 miles. my egr stopped working, went to 14-16 highway. My dpf got lost and i am now getting 18-19 highway running 75. towing right under 10K i get around 13-14 now. I only have 8K miles on her right now. i assume the mp8 and edge will get her over 20. then when she is broke in. who knows. I am interested in this also, to hear from someone who is still stock with 30-40K miles.

__________________
2007.5 2500 4x4 Megacab, 6 spd bolt action, 2" HBS, 35" bfg A/t. BAPD deletes. AFE stage 2 CAI

donnybrook · 11-18-2008, 08:46 AM

I am stock 6.7 I installed a K air filter and got one more mile to gallon hwy at 70mph. 12.5 in town. red lights everywhere in so. fl. 17.7 empty hwy at 70mph. 23,000 miles on 2007 bought in july 07. 12.5 to 14.5 mpg pulling 5th wheel to TN and back to So. FL at 65 mph. any add ons that will help me get better mileage. I hear stock from factory is a good as it gets.

Phil Treadway · 11-21-2008, 09:27 PM

I understand unplugging the ERG and it helped a little, but what is the DPF and where's it located? Thanks

Quote:

Originally Posted by Daleco

i was getting 11-13 highway running 75 at 400 miles. my egr stopped working, went to 14-16 highway. My dpf got lost and i am now getting 18-19 highway running 75. towing right under 10K i get around 13-14 now. I only have 8K miles on her right now. i assume the mp8 and edge will get her over 20. then when she is broke in. who knows. I am interested in this also, to hear from someone who is still stock with 30-40K miles.

08-31-2008, 07:45 PM	#1 (permalink)
2007 cummins 6.7 liter Cummins Fan Join Date: Jul 2008 Posts: 70 2007 cummins 6.7 liter's Truck Pics	Anyone have any fuel mileage improvements on their 6.7? Has anyone noticed any fuel mileage differences since their truck was brand new? __________________ 2007.5 2500 SLT quad cab 6.7 liter totally stock white 3.73 rear differential ratio. 2 wheel drive. Plan on a DPF and EGR delete when warranty ends.

08-31-2008, 08:31 PM	#4 (permalink)
nick03 Holland Court Diesel Join Date: Mar 2008 Location: Lakewood,CO Posts: 1,102 nick03's Truck Pics	yes but it doesn't really get better until you get between 14-18k miles. Mine is still improving. __________________ 07 Dodge 3500 6.7 6spd Manual, Inferno Red, ProComps Extreme AT 305-65-17, AFE intake w/ torque tube. MP-8 & Edge Juice W/ Attitude! Valair New12.25" 3400# Dual Disk Ceramic/Ceramic on stock Hydro's, 10 months old w/29,500+miles. A big thank you to John at Holland Court Diesel & Dan at Valair!

08-31-2008, 08:59 PM	#6 (permalink)
nick03 Holland Court Diesel Join Date: Mar 2008 Location: Lakewood,CO Posts: 1,102 nick03's Truck Pics	yep my first 16k miles where all city driving and I would avg between 12.5 and 13.3. Then sometimes I would get a tank that I babied it really well to go 15.2, but then I would have a tank do 10.7mpg. The edge and mp-8 really helped my truck be more consistent. Now I get 15+ in the city and 17+ on the highway. Not great but without deletes I think it is pretty good. __________________ 07 Dodge 3500 6.7 6spd Manual, Inferno Red, ProComps Extreme AT 305-65-17, AFE intake w/ torque tube. MP-8 & Edge Juice W/ Attitude! Valair New12.25" 3400# Dual Disk Ceramic/Ceramic on stock Hydro's, 10 months old w/29,500+miles. A big thank you to John at Holland Court Diesel & Dan at Valair!

11-17-2008, 05:24 AM	#7 (permalink)
Phil Treadway Newbie Join Date: Nov 2008 Posts: 3 Phil Treadway's Truck Pics	Fuel Mileage 6.7 I primarey use the truck for pulling, I have several trailers but primarily pull a 16' 3-horse slant gooseneck. I have approx. 38K miles I average around 10 pulling and 14 to 15 empty. I am not very happy with the mileage since my older 5.9 was in the 19 to 20 range empty. I am looking for ways to improve the mileage on this truck with or without voiding the warranty, any good ideas??? Like I said my older 5.9's did alot better on fuel mileage, this is the 6th cummins that I have owned and the most dissatisfied. Currently: 07 6.7 Auto, 4WD Big Horn Quad, Long Bed Last edited by Phil Treadway : 11-17-2008 at 05:30 AM.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Dodge Cummins Diesel Forum Advertisement

08-31-2008, 08:19 PM	#2 (permalink)
95whtzr2 Cummins Fanatic Join Date: Aug 2008 Location: Austin Area Posts: 156 95whtzr2's Truck Pics	Mine is too new to decide yet... I only have 1400 miles on it. I am getting 12.5 unloaded steady. Haven't pulled anything over 10k yet. I am waiting until early october before I truly break it in. I am interested in this as well. __________________ Tom 2008 Dodge 3500/SRW/manual 6spd/CC/LB, B&W tob My Photobucket

08-31-2008, 08:26 PM	#3 (permalink)
Jesparza300 TEXAS SOUTH CHAPTER VP Join Date: Aug 2007 Location: san antonio Posts: 768 Jesparza300's Truck Pics	i get 13 mpg, some times 15 mpg. truck likes to be at 60 for the 15 mpg __________________ TEXAS COAL ROLLERS SOUTH VP 07.5 dodge ram 2500 4x4 6.7 diesel 68RFE 3.73 gears all stock for now http://www.cumminsforum.com/forum/texas/

08-31-2008, 08:35 PM	#5 (permalink)
Jesparza300 TEXAS SOUTH CHAPTER VP Join Date: Aug 2007 Location: san antonio Posts: 768 Jesparza300's Truck Pics	i have 15K but what kills me is i do mostly stop and go traffic __________________ TEXAS COAL ROLLERS SOUTH VP 07.5 dodge ram 2500 4x4 6.7 diesel 68RFE 3.73 gears all stock for now http://www.cumminsforum.com/forum/texas/

11-17-2008, 07:37 PM	#8 (permalink)
chance odaniel Cummins Fan Join Date: Oct 2008 Location: big spring, tx Posts: 36 chance odaniel's Truck Pics	Even Though Im Illegal My Last Trip I Got 21.5, Thats With A Few Add Ons __________________ WEST TEXAS DIESEL PERFORMANCE (325-456-0728) 6.7 edge juice w/att. hot unlock, ts-mp8, afe stage II cai, ppe lift pump, h&s 5" turbo back with 6" stack, egr blocked, all the right guages, valair dual disc

11-17-2008, 08:30 PM	#9 (permalink)
08__DODGE Newbie Join Date: Nov 2008 Posts: 18 08__DODGE's Truck Pics	No add ons to ours and we get 18mpg at 74mph and 20mpg at 62mph. We have 8k on the all stock 6.7 These numbers are hand calculated unloaded and all highway.

11-18-2008, 08:37 AM	#10 (permalink)
Daleco Newbie Join Date: Aug 2008 Location: Tomball, TX Posts: 26 Daleco's Truck Pics	i was getting 11-13 highway running 75 at 400 miles. my egr stopped working, went to 14-16 highway. My dpf got lost and i am now getting 18-19 highway running 75. towing right under 10K i get around 13-14 now. I only have 8K miles on her right now. i assume the mp8 and edge will get her over 20. then when she is broke in. who knows. I am interested in this also, to hear from someone who is still stock with 30-40K miles. __________________ 2007.5 2500 4x4 Megacab, 6 spd bolt action, 2" HBS, 35" bfg A/t. BAPD deletes. AFE stage 2 CAI

11-18-2008, 08:46 AM	#11 (permalink)
donnybrook Newbie Join Date: Nov 2008 Posts: 2 donnybrook's Truck Pics	I am stock 6.7 I installed a K air filter and got one more mile to gallon hwy at 70mph. 12.5 in town. red lights everywhere in so. fl. 17.7 empty hwy at 70mph. 23,000 miles on 2007 bought in july 07. 12.5 to 14.5 mpg pulling 5th wheel to TN and back to So. FL at 65 mph. any add ons that will help me get better mileage. I hear stock from factory is a good as it gets.