TheDieselPage.com Forums  
2014 - TDP's 19th Year
What's New: | Feature Articles: | Product Reviews: | Member's Area: | Subscribe:
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | Photo Album | Diesel Books, GM Licensed T-shirts


Go Back   TheDieselPage.com Forums > Chevrolet & GMC 2500HD/3500 Light Trucks > Duramax 6600
Register FAQ Members List Photo Album Mark Forums Read

Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

Closed Thread
 
Thread Tools Display Modes
  #1  
Old 01-28-2004, 09:37 PM
D/A D/A is offline
Contributor
 
Join Date: Oct 2002
Location: Phoenix,AZ
Posts: 83
Post

I was wondering how often we should be changing our coolant and how it is done. What precautions do we need to take? Thanks for your help
__________________
2002 GMC 2500HD Duramax/Allison<br />285/75/16 on Eagle Rims <br />EGT,Boost Autometer Guages
  #2  
Old 01-28-2004, 09:54 PM
mdrag
Guest
 
Posts: n/a
Arrow

D/A,

GM recommends 5 years/150K miles service interval on the Dex-Cool used in the Dmax cooling system. Read More Power's TEXACO/HALVOLINE DEX-COOL article in the Member's Area for more detailed information on this product.

jbplock outlined the procedure for draining, refilling, and purging air from the Dmax cooling system in the COOLANT FILTERS TOPIC . His post should answer your questions about the proper procedures to follow.
  #3  
Old 01-29-2004, 08:47 PM
D/A D/A is offline
Contributor
 
Join Date: Oct 2002
Location: Phoenix,AZ
Posts: 83
Post

Thanks, but I was hoping for more details on how to change it out. I dont have the helms manual. I am not interested in a filter just a complete drain and fill. I see there is some type of bleeders. Thanks again for your help.
__________________
2002 GMC 2500HD Duramax/Allison<br />285/75/16 on Eagle Rims <br />EGT,Boost Autometer Guages
  #4  
Old 01-30-2004, 02:48 AM
jbplock
Guest
 
Posts: n/a
Post

D/A,

Is this what you were looking for? It was burried in the Filter Topic...

The method I used is as follows:

Flush the system by draining the radiator, refilling with distilled water and purging air.
Repeat this three times (it may be faster to remove the plugs on the block) and after the third cycle add approx 11 quarts of DexCool , purge air and top off one last time.

Per the Helms manual the air is purged by cycling the engine to 3000 RPMs several times with the cap off and thermostats open (engine hot). At this point I close the cap and take a ride around the block and top off one more time. Each time the engine is cycled to 3000 RPMs, the coolant level in the expansion tank drops, then rises as the RPMS fall. When all the air is purged the coolant level in the tank doesn't drop as the RPMs are cycled.

Hope this helps..


[img]smile.gif[/img]
  #5  
Old 02-02-2004, 06:16 PM
D/A D/A is offline
Contributor
 
Join Date: Oct 2002
Location: Phoenix,AZ
Posts: 83
Post

Thanks again for your help. I will probly be doing this soon.
__________________
2002 GMC 2500HD Duramax/Allison<br />285/75/16 on Eagle Rims <br />EGT,Boost Autometer Guages
Closed Thread

Thread Tools
Display Modes

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

Forum Jump


All times are GMT -7. The time now is 05:13 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 1996-2014 by TheDieselPage.com - All Rights Reserved