Lake Dexcool - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 08-21-2007, 11:58 AM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 56
Posts: 5,088
Wiki Edits: 26

Thanks: 7
Thanked 101 Times in 87 Posts
Lake Dexcool

This is what happens with DExcool and inferior gaskets. These pics are of a 4.3 in a 2003 blazer with 60K miles.
it was full right to the top. Drained 3 Gallons of coolant out of the oil drain before the oil came out.
Attached Thumbnails
Click image for larger version

Name:	img019.jpg
Views:	145
Size:	71.6 KB
ID:	23610   Click image for larger version

Name:	img018.jpg
Views:	114
Size:	79.0 KB
ID:	23611  

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-21-2007, 12:13 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,654
Wiki Edits: 0

Thanks: 15
Thanked 58 Times in 55 Posts
Allrighty then, grab the server spoon, bring your cups and let`s drink up.
That sure don`t look good, I can only imagine what the rest of it looks like.
My fathers truck is a 98 GMC Sierra with the 4.3 Vortec, it has 152,000 miles and the gaskets are still holding so far. When I bought my Vortec 350, the intake gaskets was the reason he had it for sale. When they blew he removed it since it had high mileage and swapped over to the replacement engine he already had for it.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-21-2007, 12:17 PM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 6,688
Wiki Edits: 0

Thanks: 3
Thanked 403 Times in 348 Posts
Quote:
Originally Posted by DoubleVision
Allrighty then, grab the server spoon, bring your cups and let`s drink up.
That sure don`t look good, I can only imagine what the rest of it looks like.
My fathers truck is a 98 GMC Sierra with the 4.3 Vortec, it has 152,000 miles and the gaskets are still holding so far. When I bought my Vortec 350, the intake gaskets was the reason he had it for sale. When they blew he removed it since it had high mileage and swapped over to the replacement engine he already had for it.
The reason I don't run Dexcool in anything. The stuff is quirky, the smallest amount of air gets to it and you've got big problems.

Bogie
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-21-2007, 08:58 PM
GM Tech
 
Last photo:
Join Date: Feb 2007
Location: Moose Jaw, Saskatchewan
Age: 39
Posts: 58
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yeah, I try and convince people to flush the dex-cool out of their vehicles and run the good old green stuff. I've pulled heads off vehicles with 40-60000km on them for various reasons...trucks especially to remove broken exhaust bolts...and the head gaskets look horrible! They are eroding, crumbling, and swelling around all the coolant passages! Don't believe the factory claims of 250000km service intervals! The crap gets extremely acidic! It destroys gaskets. It's also expensive and it stinks! But it looks like Tang!
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-21-2007, 10:26 PM
Member
 
Last photo:
Join Date: May 2003
Location: Shreveport LA
Age: 64
Posts: 5,103
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Looks like pesto sauce.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-21-2007, 11:33 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,654
Wiki Edits: 0

Thanks: 15
Thanked 58 Times in 55 Posts
We swapped over to plain green anti-freeze in my fathers pick up years ago, it`s likely the reason it hasn`t eaten the intake gaskets. I`ve heard some say it`s not the dexcools fault and others that say it is. Me? I didn`t want to take any chances, I sure didn`t want to have to remove that mess from the top of that 4.3 Vortec either, hence the reason for swapping. Hard to believe it made it that far, as the truck already had over 115,000 miles on it when we did the switch. In my 92 chevy pickup, I use regular anti-freeze about 30%, and water at 70% as here in the south it doesn`t get really cold. I also use a bottle of red line water wetter.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-21-2007, 11:42 PM
Member
 
Last photo:
Join Date: Feb 2003
Posts: 642
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
YuK i can forsee that 4.3 spinning a bearing.........Those vortecs are notorious for leaking intake gaskets.....fel-pro makes a problem solver gasket for the small block vortecs not sure if they make one for the 4.3 or not.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-22-2007, 09:58 AM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 56
Posts: 5,088
Wiki Edits: 26

Thanks: 7
Thanked 101 Times in 87 Posts
Quote:
Originally Posted by HalfOunce
YuK i can forsee that 4.3 spinning a bearing.........Those vortecs are notorious for leaking intake gaskets.....fel-pro makes a problem solver gasket for the small block vortecs not sure if they make one for the 4.3 or not.
We didn't fix it, we told the customer we would but no guarantee it would hold together.
He paid us for taking it apart and towed it away. He is going to get a junk yard engine and swap it himself.
I would like to get a movie of that. Those blazers a re a real pain in the butt to swap an engine in.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-22-2007, 11:48 AM
scapegoat's Avatar
Registered User
 
Last photo:
Join Date: Nov 2005
Location: mn
Posts: 251
Wiki Edits: 0

Thanks: 6
Thanked 0 Times in 0 Posts
Iv'e got a 2000 gmc jimmy with the 4.3 with 73000 miles on it. Can I flush that dexcool out and put regular green antifreeze in it? I have heard to many horor stories about it to even want it in my jimmy. My buddy goes throught intake gaskets like its going out of style on his 4.3.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-23-2007, 04:44 PM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 56
Posts: 5,088
Wiki Edits: 26

Thanks: 7
Thanked 101 Times in 87 Posts
You can but you have to get it all out, pull the block drains on both sides and run water through it until it comes out clear. Run it until the stat opens and do it again. You have to get all the dexcool out. Just doing the dump the radiator and run a hose through it for a while isnt going to do it. You have to drain the block
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 08-23-2007, 09:18 PM
MI2600's Avatar
Member# 3287
 

Last journal entry: Vortec Heads
Last photo:
Join Date: Jul 2002
Location: N. Muskegon, MI
Posts: 2,632
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
If you want a real horror story, Google Dexcool.

After reading that and GM's multiple excuses for Dexcool failures, I flushed my daily driver, '98 Monte Carlo, with both a long-term and short-term flush and went with the green.
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 08-23-2007, 09:40 PM
66GMC's Avatar
Get in, sit down, hang on
 

Last journal entry: Cab Removal
Last photo:
Join Date: May 2005
Location: Olds, Alberta Canada
Age: 56
Posts: 2,761
Wiki Edits: 0

Thanks: 32
Thanked 90 Times in 85 Posts
Quote:
Originally Posted by HalfOunce
YuK i can forsee that 4.3 spinning a bearing.........Those vortecs are notorious for leaking intake gaskets.....fel-pro makes a problem solver gasket for the small block vortecs not sure if they make one for the 4.3 or not.
Yes they do.
Part Number: MS-98002T
I just replaced them on my daughter's 2000 Silverado 4.3.


I have heard the Dexcool stories before, and have swapped it over to "green stuff" in my 98 Grand Prix GTP.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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
49 Merc Lake Pipes croddc5 Body - Exterior 1 11-04-2006 07:02 PM
Question about triple lake pipes??? workingclass Engine 2 03-26-2006 08:49 AM
lake george pics are up IROC100 Hotrodders' Lounge 5 09-22-2005 05:38 PM
Lake/ side pipe question Magnus_Jager Body - Exterior 7 02-16-2005 02:29 PM
Anybody from Lake Tahoe dano_711 Hotrodders' Lounge 2 09-15-2003 04:16 AM


All times are GMT -6. The time now is 05:56 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.