brown shit in coolant tank - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Lounge (1) Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Speciality Forums > Maintenance & Fluids
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Auto EscrowAuto LoansInsurance

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 04-23-2008, 11:05 PM   #1 (permalink)
TaterWagon
Diesel Technician
 
TaterWagon's Avatar
 
Join Date: Oct 2007
Location: central CA foothills
Posts: 170
iTrader Score: 0 reviews

brown shit in coolant tank

Got a "low coolant level" display last night. Checked the tank and it was nearly empty except for the muddy brown stuff in the bottom. I have 38k miles on the truck, and I'm going to go ahead and change the coolant. Question 1: Is that brown stuff going to be throughout the system, or does it float on top like in a septic tank? Question 2: If it is throughout the system, can it be flushed out? Question 3: I will go ahead and replace the t-stats while I'm at it; should I get them from the dealer, or will aftermarket be OK?

If this has already been covered, point me in the right direction because I didn't see it in my earlier search. Thanks!
__________________
'05 GMC Sierra 4x4 CC/SB D/A
Line-X over the rail, black;18k Pullrite SuperGlide with SuperRails; Airlift airbags; Bilstein 5100's; Fox Weatherboots; LBZ mouthpiece; Volant 4" exhaust; Rad Mod V2; BD Full Bore manifold; Autometer ES pyro
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 04-24-2008, 08:10 AM   #2 (permalink)
Tom S.
Moderator
Life sucks-then you die.
 
Tom S.'s Avatar
 
Join Date: Jan 2006
Location: Waterford, MI
Posts: 5,663
iTrader Score: 0 reviews

DieselPlace.com Lifetime Premium Member

Flush your system. If you have it in your reservoir, you have it in your system, most notably the heater core.

The leading cause of this is a improperly sealing radiator cap and/or reservoir cap. As for the thermostats, if they aren't broke, why 'fix' them? I'd leave them alone.
__________________
2015 LML 3500 HD Dually (Yes, it has training wheels!)

Former Member #13 of the 3500 SRW Club

Press 1 for English - Press 2 to learn English - Press 3 for Immigration

You give me a water board, Dick Cheney and one hour, and I'll have him confess to the Sharon Tate murders. Jesse Ventura

Last edited by Tom S.; 04-24-2008 at 08:12 AM.
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 02:45 PM   #3 (permalink)
TaterWagon
Diesel Technician
 
TaterWagon's Avatar
 
Join Date: Oct 2007
Location: central CA foothills
Posts: 170
iTrader Score: 0 reviews

Thanks for the response, Tom. Is that sludge difficult to flush out? I replaced my expansion tank cap a few months ago due to the upper radiator hose collapsing when cold. That took care of that issue.

Regarding the thermostats, I just figured it would be a good idea to change them with the Dex. If it isn't necessary, I won't mess with them.

Any further insight will be appreciated. Thanks.
__________________
'05 GMC Sierra 4x4 CC/SB D/A
Line-X over the rail, black;18k Pullrite SuperGlide with SuperRails; Airlift airbags; Bilstein 5100's; Fox Weatherboots; LBZ mouthpiece; Volant 4" exhaust; Rad Mod V2; BD Full Bore manifold; Autometer ES pyro
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 03:36 PM   #4 (permalink)
ST04
Diesel Technician
 
Join Date: Dec 2007
Location: Houston
Posts: 211
iTrader Score: 0 reviews

Lone Star Diesels Member

refill with coolant that is made with distilled water. Sometimes tap water can leave deposites and corrode out your radiator.
__________________
2007.5 GMC 2500HD ext. Cab 4x4 LMM/Allison.
Just stock for now.
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 04:38 PM   #5 (permalink)
Tom S.
Moderator
Life sucks-then you die.
 
Tom S.'s Avatar
 
Join Date: Jan 2006
Location: Waterford, MI
Posts: 5,663
iTrader Score: 0 reviews

DieselPlace.com Lifetime Premium Member

I don't know on the D-max because I've not done one yet. On my S10, I used the Prestone stuff to flush the system, and then disconnected my heater hoses and used a garden hose to flush it both ways - forward and back. There was a lot of that 'stuff' in it.

As mentioned, use distilled water to get your 50-50 mix, or buy the ready mixed stuff.
__________________
2015 LML 3500 HD Dually (Yes, it has training wheels!)

Former Member #13 of the 3500 SRW Club

Press 1 for English - Press 2 to learn English - Press 3 for Immigration

You give me a water board, Dick Cheney and one hour, and I'll have him confess to the Sharon Tate murders. Jesse Ventura
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 04:50 PM   #6 (permalink)
Mike Miller
Diesel Specialist
 
Join Date: Oct 2007
Posts: 752
iTrader Score: 0 reviews

Firstly what is the base of this brown stuff ? Is it oil base or what? If it is oil base you have a larger problem because oil is entering the cooling system
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 05:02 PM   #7 (permalink)
srjacob
Diesel Technician
 
Join Date: Jul 2005
Location: Utah
Posts: 100
iTrader Score: 0 reviews

What is wrong with replacing the T-stats at the same time. It is just a matter of time when they go bad.

Just a question? If you you use distilled water or mineral free water, wouldn't the lack of minerals in the water pull minerals out of the cooling system it self?
__________________
05 LLY GMC SLT CARBON METALLIC
TRIPPLE DOG W/OUTLOOK
4" CAT BACK
BULLY DOG AIR BOX
Offline   Reply With Quote Quick reply to this message
Old 04-24-2008, 08:22 PM   #8 (permalink)
Tom S.
Moderator
Life sucks-then you die.
 
Tom S.'s Avatar
 
Join Date: Jan 2006
Location: Waterford, MI
Posts: 5,663
iTrader Score: 0 reviews

DieselPlace.com Lifetime Premium Member

Quote:
Originally Posted by srjacob View Post
What is wrong with replacing the T-stats at the same time. It is just a matter of time when they go bad.

Just a question? If you you use distilled water or mineral free water, wouldn't the lack of minerals in the water pull minerals out of the cooling system it self?
I have sold vehicles with close to 200,000 miles on them that still had the original thermostat. Why do you say it's just a matter of time before they go bad? In fact, on three vehicles I've had, the thermostats out lived the radiators. So using your logic, I guess he should replace the radiator too?

The idea of using distilled water, which goes back many many years is to keep people from using water with minerals in it that are harmful to the cooling system. You might be surprised what minerals can be found in our drinking water. As a friend of mine used to say "never drink water because fish pee in it". Of course this was only his excuse for drinking beer.

Also, additives in the antifreeze help keep corrosion from forming in the cooling system, and adding tap water can neutralize these additives.
__________________
2015 LML 3500 HD Dually (Yes, it has training wheels!)

Former Member #13 of the 3500 SRW Club

Press 1 for English - Press 2 to learn English - Press 3 for Immigration

You give me a water board, Dick Cheney and one hour, and I'll have him confess to the Sharon Tate murders. Jesse Ventura
Offline   Reply With Quote Quick reply to this message
Old 04-25-2008, 03:04 AM   #9 (permalink)
TaterWagon
Diesel Technician
 
TaterWagon's Avatar
 
Join Date: Oct 2007
Location: central CA foothills
Posts: 170
iTrader Score: 0 reviews

Thanks, guys. I already planned on using either distilled water or the premixed stuff. My water has a pretty high mineral content, and I don't want it in my cooling system.

Tom, is that brown stuff difficult to flush out? What is it, degraded Dexcool or something else?

Thanks.
__________________
'05 GMC Sierra 4x4 CC/SB D/A
Line-X over the rail, black;18k Pullrite SuperGlide with SuperRails; Airlift airbags; Bilstein 5100's; Fox Weatherboots; LBZ mouthpiece; Volant 4" exhaust; Rad Mod V2; BD Full Bore manifold; Autometer ES pyro
Offline   Reply With Quote Quick reply to this message
Old 04-25-2008, 05:32 AM   #10 (permalink)
Tom S.
Moderator
Life sucks-then you die.
 
Tom S.'s Avatar
 
Join Date: Jan 2006
Location: Waterford, MI
Posts: 5,663
iTrader Score: 0 reviews

DieselPlace.com Lifetime Premium Member

Quote:
Originally Posted by TaterWagon View Post
Thanks, guys. I already planned on using either distilled water or the premixed stuff. My water has a pretty high mineral content, and I don't want it in my cooling system.

Tom, is that brown stuff difficult to flush out? What is it, degraded Dexcool or something else?

Thanks.
I don't know exactly what it is - I was told it's caused by dirt getting into the system, but I suspect it's not just the dirt, but possibly something in the antifreeze reacting to the dirt.

Anyway, the Prestone seemed to work for me - but I did do two flushes to make sure. That was four years ago, and the truck is still good, but time wise, I probably should change it again.
__________________
2015 LML 3500 HD Dually (Yes, it has training wheels!)

Former Member #13 of the 3500 SRW Club

Press 1 for English - Press 2 to learn English - Press 3 for Immigration

You give me a water board, Dick Cheney and one hour, and I'll have him confess to the Sharon Tate murders. Jesse Ventura
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 Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

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

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Coolant blowing out coolant tank tube? tarkstoyz Duramax Third Generation: 2006-2007.5 (LBZ & LLY) 8 10-13-2010 02:16 PM
brown coolant??? dsanchez45s Duramax Second Generation: 2004.5-2005 (LLY) 6 06-24-2010 05:45 PM
coolant tank Dan L Duramax Second Generation: 2004.5-2005 (LLY) 2 08-10-2008 10:19 PM
coolant is turning brown??? reutz Duramax Second Generation: 2004.5-2005 (LLY) 11 02-18-2007 08:23 PM
Coolant Overflow Tank ????? Diesel Dragon Duramax First Generation: 2001-2004 (LB7) 34 04-05-2006 08:08 PM


All times are GMT -4. The time now is 08:37 PM.


Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide

SEO by vBSEO 3.6.0