Chevy can prove New Duramax has got 30 mpg during testing at 55 mph - TheDieselGarage.com
Thread Details Posted by Jeremiah, this thread has received 11 replies and been viewed 28398 times.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 12 (permalink) Old 02-10-2010, 07:44 PM Thread Starter
Banned
 
Join Date: Sep 2009
Posts: 713
Thanks: 332
Thanked 84 Times in 48 Posts
Chevy can prove New Duramax has got 30 mpg during testing at 55 mph

Quote:
A new 36-gallon fuel tank extends the driving range of the 2011Silverado HD. Itís standard on long and short box versions. GM promises up to a country-crossing 680-mile range, or about 18.8 mpg.

"Heavy duty trucks aren't required to be tested for fuel economy by the EPA," Mikulec said. "But [for the single rear-wheel] truck, we've measured around 15 mpg in the city and about 24.5 mpg on the highway. We have the numbers to substantiate it, but we don't have to put it on the [window] label. There are some limited cases where at 55 mph at a steady state going around a track, we can get over 30 mpg."
...
Jeremiah is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 02-10-2010, 09:59 PM
Senior Member
 
southtexasidi's Avatar
 
Join Date: Jan 2009
Posts: 361
Points: 20,781
Thanks: 9
Thanked 14 Times in 13 Posts
dad gum, thats perdy darn good.

mine: 1986 F250 6.9 idi

dads: 2001 F250 platinum edition 7.3 powerstroke

also 1966 MACK B53.in the process of restoring.

american club # 31

singles club # 218

southtexasidi is offline  
post #3 of 12 (permalink) Old 02-10-2010, 11:00 PM
TDG Mafia Goon
 
BombDocDiesel's Avatar
 
Join Date: Mar 2009
Location: Belcamp, MD
Posts: 3,710
Points: 68,088
Thanks: 678
Thanked 439 Times in 373 Posts
Garage
Send a message via Yahoo to BombDocDiesel
Sounds good.

If we drove 55 this would be incredible. My mileage with my LMM is well over 20 for the stretch in OK where I have to drive under 60. It drops abruptly once I get back 75 or so.

-Josh-
"SLICK" 2008 Chevrolet 2500HD LT 4X4 Z71 CC/SB D/A Silver Birch Metallic

My Gassers
1956 Clipper Deluxe project, and 1999 Subaru Legacy "beateroo"

Are you thinking about a Duramax? You need Duramax Info! The Duramax Index

TDG MAFIA!! MAFIA Application
American Club #38
B.O.M.B. Squad #55
Singles Club #248

Army Bomb Squad!
BombDocDiesel is offline  
post #4 of 12 (permalink) Old 02-11-2010, 12:01 AM
Gone Fishin...
 
merlin5577's Avatar
 
Join Date: Dec 2008
Location: Taunton, MA
Posts: 3,099
Points: 1,490
Thanks: 1,058
Thanked 561 Times in 471 Posts
Send a message via AIM to merlin5577 Send a message via Yahoo to merlin5577
Where did you get that information?

30 doesnt sound unreasonable. I have personally experienced 23MPG in my truck before.

-Robert.

My Fleet;

2011 Volkswagen Jetta TDI 2.0L 6A
2010 Chevrolet Malibu LT 2.4L 6A
2003 Chevrolet Silverado LS 6.6L 5A
1997 GMC Suburban SLT 5.7L 4A

TDG MAFIA
Quote:
If you dont stand behind our troops, feel free to stand in front of them.
Thinking of buying a Duramax? You need to click this link;

Reading material

I am an old Fart;

Toot-Toot

merlin5577 is offline  
post #5 of 12 (permalink) Old 02-11-2010, 01:30 AM
BDD
 
Join Date: Dec 2009
Location: Calgary, AB
Posts: 141
Points: 19,946
Thanks: 11
Thanked 9 Times in 6 Posts
Garage
Good Lord !!!!!!!!! I have to put one foot out the door and push like a skate board to coax 16-17 out of mine. My truck must have been made on a moday or friday because its always been poor on milage.

BDD
2008 GMC Sierra 2500 Crew Cab Z71 4x4, Air Hawk grill, airraid intake, the rest is stock.

Canadian Club Member #34
BigDaddyDiesel is offline  
post #6 of 12 (permalink) Old 02-11-2010, 02:23 AM
TDG Mafia Goon
 
BombDocDiesel's Avatar
 
Join Date: Mar 2009
Location: Belcamp, MD
Posts: 3,710
Points: 68,088
Thanks: 678
Thanked 439 Times in 373 Posts
Garage
Send a message via Yahoo to BombDocDiesel
Once you get rid of the DPF yours will get better. Mine sure did.

-Josh-
"SLICK" 2008 Chevrolet 2500HD LT 4X4 Z71 CC/SB D/A Silver Birch Metallic

My Gassers
1956 Clipper Deluxe project, and 1999 Subaru Legacy "beateroo"

Are you thinking about a Duramax? You need Duramax Info! The Duramax Index

TDG MAFIA!! MAFIA Application
American Club #38
B.O.M.B. Squad #55
Singles Club #248

Army Bomb Squad!
BombDocDiesel is offline  
post #7 of 12 (permalink) Old 02-11-2010, 05:03 AM
CRAZY CANUCK
 
BriteWhiteRam's Avatar
 
Join Date: Oct 2006
Location: Alberta, Canada
Posts: 4,317
Points: 46,981
Thanks: 350
Thanked 506 Times in 416 Posts
Garage
well whats my problem?? cat and muffler are gone and im still only able to get 18mpg max on the highway... like 13mpg in the city.... WTF

Aaron the Crazy Canuck
2006 Chevrolet Silverado LT 2500: LBZ - Allison, Greystone Metallic, 4x4,PPE airbox mod, missing muffler/cat, EFILive tuned by Nick at duramaxtuner, MA tie-rod sleeves and Grade C headgaskets
Totalled!! May 2nd 2008-2005 Dodge Ram 3500 laramie: Cummins auto, plain white, rebuilt tranny
1986 Mercury Capri - 5.0L, AOD, shorty headers, acell ignition, Holly street dominator intake, Holly 625 vacuum secondaries carb, Dual glass packs "my little yellow terror"

DURAMAX INDEX; You want a Duramax? you want to click on this >>The Duramax Index

Canadian Club Member #1
Singles Club member #186
Ridin Dirty Club #5


TDG MAFIA


Check out the NEW and IMPROVED TDG Truck Poll!
TDG TOTQ
BriteWhiteRam is offline  
post #8 of 12 (permalink) Old 02-11-2010, 05:17 PM
TDG Mafia Goon
 
BombDocDiesel's Avatar
 
Join Date: Mar 2009
Location: Belcamp, MD
Posts: 3,710
Points: 68,088
Thanks: 678
Thanked 439 Times in 373 Posts
Garage
Send a message via Yahoo to BombDocDiesel
That would be your heavy foot Aaron! I have the same problem most of the time.

-Josh-
"SLICK" 2008 Chevrolet 2500HD LT 4X4 Z71 CC/SB D/A Silver Birch Metallic

My Gassers
1956 Clipper Deluxe project, and 1999 Subaru Legacy "beateroo"

Are you thinking about a Duramax? You need Duramax Info! The Duramax Index

TDG MAFIA!! MAFIA Application
American Club #38
B.O.M.B. Squad #55
Singles Club #248

Army Bomb Squad!
BombDocDiesel is offline  
post #9 of 12 (permalink) Old 02-11-2010, 05:26 PM
Administrator
 
fordt's Avatar
 
Join Date: May 2005
Location: Vero Beach, FL.
Posts: 12,738
Points: 70,762
Thanks: 380
Thanked 1,064 Times in 566 Posts
Images: 5
Garage
My problem is no a heavy foot, as much as a heavy truck!

That mileage is great for the new trucks, I hope it is realized in the real world when they start hitting consumers driveways.

-Wayne
2007 Chevy LBZ 6.6L Classic

Quote:
Age is a hell of a price to pay for maturity.
fordt is offline  
post #10 of 12 (permalink) Old 02-11-2010, 05:27 PM
is here and there.
 
Rcannon's Avatar
 
Join Date: Dec 2008
Posts: 10,573
Points: 62,978
Thanks: 691
Thanked 1,109 Times in 665 Posts
Images: 11
Quote:
Originally Posted by BombDocDiesel View Post
Sounds good.

If we drove 55 this would be incredible. My mileage with my LMM is well over 20 for the stretch in OK where I have to drive under 60. It drops abruptly once I get back 75 or so.
I get similar numbers.

Life changes, so roll with it, not against it.
Rcannon is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
2005 chevy duramax need help kerrbilt Duramax 2004.5-2005(LLY) 4 05-25-2009 05:26 PM
duramax into 71 chevy roofmaster GM Performance Forum 4 03-30-2008 10:30 PM
01 Chevy 2500 HD 4x4 Duramax lawnboy01 Whats Been Sold 8 11-17-2007 09:25 PM
Wanted: Tuner for 06 Chevy Duramax ldshadle Whats Been Sold 1 09-10-2007 12:18 AM
05 chevy duramax crew cab 4*4 fwdcummins Whats Been Sold 0 02-27-2007 12:59 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome