The nasty effects of DEXCOOL. Get rid of it! - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-29-2007, 07:04 PM   #51
PopaDopaDo
True Car Nut
 
popatim's Avatar
 
Join Date: Jan 2005
Location: NY
Posts: 4,957
Thanks: 0
Thanked 0 Times in 0 Posts
popatim is on a distinguished road
Default

Plain green coolant has worked well in my wifes car for the past several years.
popatim is offline   Reply With Quote
Old 05-29-2007, 07:17 PM   #52
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

Quote:
Originally Posted by J Wikoff
Will Dex-compatible Prestone do the same thing or eat gaskets?
I've read the prestone all makes has the same additive that gives dex its bad name.

My guess is that going back to green is the best.
corvettecrazy is offline   Reply With Quote
Old 05-30-2007, 09:31 AM   #53
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Quote:
Originally Posted by J Wikoff
Will Dex-compatible Prestone do the same thing or eat gaskets?
Dex doesn't eat gaskets. There is no proof that Dex collapses the intake gaskets around the air/fuel intake runnings that I have seen to date. Dex congeals ... take a look at a overflow container in a Dex system that wasn't maintained. You'll have ring around the jug.
BillBoost37 is offline   Reply With Quote
Old 05-30-2007, 09:41 AM   #54
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I disagree, Boosty. The plastic gaskets used through 95 with the green stuff last longer than the plastic gaskets used from 96 on with the DEX. It'* the same material from the L27 through the L36, and the L67'* alike.

The gaskets exposed to DEX look HORRIBLE at 30-40k or sooner. The gaskets exposed to green (glycol) coolant still look good over 100k. The acidity of the DEX is a direct cause of LIM gasket failure.
willwren is offline   Reply With Quote
Old 05-30-2007, 09:45 AM   #55
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Exactly my point Bill and thank you for proving my point.

We need to stop touting about how bad dex is on the gasket itself. The gaskets at the intake ports where only air and fuel are present collapse nearly identically to the coolant passages. No dex is present in the intake runner.
BillBoost37 is offline   Reply With Quote
Old 05-30-2007, 09:48 AM   #56
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Not exactly your point. DEX migrates around the silicone inserts to the intake runners and collapses them. It alters the properties of the plastic.

You can clearly see how it migrated there from the coolant ports on the set I have here to show people when they ask.

ALL DEX LIM gaskets will look like that. NONE of the non-Dex gaskets will. It is clearly a DEX issue.
willwren is offline   Reply With Quote
Old 05-30-2007, 09:49 AM   #57
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Shoot me some pics please. All the sets I've seen haven't shown any visible signs of migration from the coolant ports. Only the collapsing.
BillBoost37 is offline   Reply With Quote
Old 05-30-2007, 11:06 AM   #58
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

The set I have here has about 30k on them. I shot pics before I left the house this morning. I gotta spice 'em up a bit. I'll get them up today.
willwren is offline   Reply With Quote
Old 05-30-2007, 11:26 AM   #59
Administratus Emeritus
Certified Car Nut
 
GXP Venom's Avatar
 
Join Date: Jan 2006
Location: Purgatory, Pennsylvania
Posts: 16,538
Thanked 7 Times in 4 Posts
GXP Venom is on a distinguished road
Default

Anyways.......JC ( The thread did not ask for yet another debate about DEX).......those pics definitely look like green as added to some extent at some time and the coolant most likely never replaced. For the little money a new radiator costs: I would replace it , add a cleaner, and flush the living hell out of the system.
GXP Venom is offline   Reply With Quote
Old 05-30-2007, 11:41 AM   #60
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

The thread is directly about DEX.

Here'* a set of L36 LIM gaskets at about 30-35k miles. Please note that the DEX was probably already acidic when these were installed:

Name:  DSC04149.jpg
Views: 4
Size:  180.2 KB

Name:  DSC04148.jpg
Views: 4
Size:  231.6 KB

Name:  DSC04147.jpg
Views: 4
Size:  97.0 KB

Name:  DSC04146.jpg
Views: 4
Size:  199.1 KB


Now for the explanation:

Name:  lim_gaskets.jpg
Views: 4
Size:  185.6 KB
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
getting rid of a nasty moldy funk LittleHoov Detailing & Appearance 4 10-14-2006 03:02 PM
Looking to get rid of my 2001 SSEi Factory Chrome Rims (17&q jasonapr78 2000-2005 3 08-07-2003 02:00 PM
Looking to get rid of my 2001 SSEi Factory Chrome Rims (17&q jasonapr78 Performance, Brainstorming & Tuning 9 08-07-2003 01:59 PM
To Dexcool or not to Dexcool ???? along 1992-1999 7 06-08-2003 12:40 PM
Can I get rid of the ABS? Blk_Bonneville 1992-1999 16 09-27-2002 10:06 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:33 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.