DEF Fluid - Chevy and GMC Duramax Diesel Forum
Maintenance Discuss scheduled maintenace, capacities, filter part numbers, etc.

DuramaxForum.com is the premier Chevy and GMC Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-29-2011, 05:19 PM   eBay Motors  #1 (permalink)
 
Join Date: Aug 2011
Posts: 3
DEF Fluid

Looking at getting a 2011 duramax and saw the requirement to change DEF fluid every 5,000 miles. What is DEF fluid and how much does this cost? I love my Duramax, but damn another fluid to change.
__________________
2002 2500 Crew Cab Duramax
robbie52 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-29-2011, 09:38 PM   eBay Motors  #2 (permalink)
Junior Member
 
gregmp15's Avatar
 
Join Date: Sep 2010
Location: Palm Beach County Fl.
Posts: 52
I thought you added more.
__________________
2013 GMC sierra 1500 sle 4wd
White Diamond crew cab

Traded 2011 GMC Sierra 2500 SLT 4wd with Duramax and Allison 6 speed.GMC Cargo Management toolbox and tonneau cover. Nitto Crossteks 275-70-18.
Daystar 2 '' Level in front.

CMS Toolbox is for sale in South Fla.
gregmp15 is offline   Reply With Quote Quick reply to this message
Old 08-29-2011, 09:40 PM   eBay Motors  #3 (permalink)
Im Superrrrr!
 
jmaz268's Avatar
 
Join Date: Apr 2007
Location: Central Illinois
Posts: 14,533
You dont change it, it is for emissions and used up in use of the vehicle.

I actually seen it for sale at walmart here last week.
__________________
Goes by John
--2001 ECSB
SDP Big Single, Wehrli Dual Fuelers, 50% sticks, Front Coilover Conversion, Anorexic .....much much more

Sponsored by Creatures of the Night Performance and SDP
--2005 CCLB Dually
The tow pig
Tuned and Edge Insight CTS
jmaz268 is offline   Reply With Quote Quick reply to this message
Old 08-29-2011, 09:47 PM   eBay Motors  #4 (permalink)
I'm That Guy...
 
TDFDiesel's Avatar
 
Join Date: Aug 2010
Location: Gilbert, AZ
Posts: 15,628
Price varies where you buy it, it is used in the exhaust to treat emissions. Mileage varies depending on different variables like driving conditions.

Like mentioned it's a fluid filled up, not changed.

DEF isn't a bad thing. LML has good power and fuel mileage with a warranty.
__________________
Tony
Non Vendor contact information, URLs and/or links are NOT allowed in signatures OR on forum!
My opinion is not the opinion of Duramax Forum, Auto Forums, Auto Guide, or other Duramax Forum staff members!

CLICK TO READ: FORUM RULES OR DF STAFF!

Thank you Rob Coddens (Idaho Rob), Dustin @ ATP, Scott @ SDP, Kory Willis, and Mike L. for all of your help!

05 LLY CCSB 4wd - Mods coming (Truck Love from ATP Trucks and Copperhead Diesel expected soon)
SOLD: 05 LLY, 05 LLY, 09 LMM, 02 LB7

Build Threads : 2005 Chevy Silverado | 1978 Ford Bronco (Sister Site)
TDFDiesel is offline   Reply With Quote Quick reply to this message
Old 08-30-2011, 05:00 AM   eBay Motors  #5 (permalink)
Duramax Forum Supporter
Supporting Member
 
chrisdridley's Avatar
 
Join Date: Oct 2010
Location: Tennessee
Posts: 102
DEF is a sacrificial fluid but it does have a shelf life of about one year. If you don't use it, you have to change it.
You can buy urea ( DEF fluid ) at most Pilot Travel centers at the pump and many parts stores....I sell it in half gallon bottles with a quick disconnect cap.
DON"T buy it from the dealer....they are marking the price up X10.
If you are pulling out on the highway a lot and not just poking around town, a urea fill will last for 10,000 plus miles between fill-ups
chrisdridley is offline   Reply With Quote Quick reply to this message
Old 09-08-2011, 08:21 AM   eBay Motors  #6 (permalink)
DuramaxForum n00b
 
Join Date: Sep 2011
Posts: 11
Tis a shame GM decided not to put a level indicator on the DEF reservoir. :/ am sure I read somewhere a % level is obtainable thru a scan tool(tec2 etc) but not 100% on this. Have considered fabbing up a dipstick to be able to randomly check the level, but again, with the possibility of contamination(which shows up on the DIC as poor quality DEF fluid) am yet to give it a shot. Ideally it would be a length of plastic, similar to whats found in between yella-tung flooring. currently using a brand known as Nonox, which states not to allow contact with any metal as cross contamination occurs.

Come on GM, give us an update for the DIC for the DEF level!!!
2011GMC is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 03:14 PM   eBay Motors  #7 (permalink)
Junior Member
 
Sum1Zombie's Avatar
 
Join Date: Jul 2011
Location: NORTHERN NEW MEXICO
Posts: 51
Does anyone know the actual milage you can go before adding fluid? I currently have about 4000 miles on my LML and have not added any fluid yet. I leave for an elk hunt this coming Sunday and was wondering if One Gallon is going to be enough or do I need to purchase more? I've really been babying it since I got it, with no towing yet and not getting on it.
__________________
Peenutt: 2011 LML Chevy Durfamax, Taupe Gray and stock for now.


Sum1Zombie is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 03:20 PM   eBay Motors  #8 (permalink)
EFILIVE,y u no DSP5 LML??
Lifetime Supporting Member
 
gp184's Avatar
 
Join Date: Jun 2011
Location: Reserve, LA
Posts: 1,586
I'm at 5000 miles and according to my insight i still have over 60% left in the tank!!

also check this out: All about DEF
__________________
Greg
2011 Chevy LML. No DEF for me.
I got tint and tires but i'm not telling what % or what size......
Quote:
Originally Posted by DMAXchris View Post
I take turbo dumps when I eat lots of chili. Sometimes they are loud.
See Will @ Troll Performance

Thanks to Willie at
Synthetic motorsports
gp184 is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 03:44 PM   eBay Motors  #9 (permalink)
Senior Member
 
mainec's Avatar
 
Join Date: Apr 2011
Location: Haslet, TX
Posts: 441
I think I filled mine about 9-10k dont remember. Dont worry about it until the 1k warning comes on.
__________________
2011 2500HD DMAX LML CC LT 4x4 Victory Red
Cognito 7-9" Lift Kit set at 7"
Defender Roof Rack, 50" E Series LED Light Bar, 2-Dually D2 White 60deg Diffusion lights
3-Part HID Conversion kit HI-BEAM, LOW-BEAM, FOGS
AMP Electric Running Boards, AMP Bedstep, AMP Bedstep 2
MBRP Cat Back Exhaust w/ Delete
H&S XRT Pro Tuner
K&N Cold Air Intake
BMF Novakane 8 22x10.5 Chrome 8x180 4.75BS/-25OS, Toyo A/T 35x12.50x22 w/ matching spare.
mainec is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 04:10 PM   eBay Motors  #10 (permalink)
Duramax Forum Supporter
Supporting Member
 
chrisdridley's Avatar
 
Join Date: Oct 2010
Location: Tennessee
Posts: 102
DEF will last between 10k and 13k miles for most depending on driving conditions. The book says 5k but we are getting much more.
Don't sweat it....you'll get a warning well before you are out.
chrisdridley is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum 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:

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
Display Modes

Posting Rules
You may post new threads
You may 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



All times are GMT -7. The time now is 05:35 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.3.2