Dex Cool Bad on GM Gaskets?
03-31-2012, 08:35 AM
#1
Senior Member
Thread Starter
Join Date: 09-24-2011
Location: Long Island, NY
Posts: 104
Dex Cool Bad on GM Gaskets?
I've read that Dex Cool was found to be bad on GM gaskets and causing many leaks. There was even a class action law suit on this. However what I read was not specific on years.
As I read on, it seemed it was all mentioning vehicles from 2003 and older. Since the HHR came out in 2008, are our vehicles excluded from this and the issue corrected by then? 2008 may not even be the key year since the engines were probably used before the HHR came out.
As I read on, it seemed it was all mentioning vehicles from 2003 and older. Since the HHR came out in 2008, are our vehicles excluded from this and the issue corrected by then? 2008 may not even be the key year since the engines were probably used before the HHR came out.
03-31-2012, 08:44 AM
#2
Senior Member
Join Date: 11-24-2010
Location: Cincinnati, OH
Posts: 124
03-31-2012, 03:26 PM
#4
Technical Moderator
Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,694
I've read that Dex Cool was found to be bad on GM gaskets and causing many leaks. There was even a class action law suit on this. However what I read was not specific on years.
As I read on, it seemed it was all mentioning vehicles from 2003 and older. Since the HHR came out in 2008, are our vehicles excluded from this and the issue corrected by then? 2008 may not even be the key year since the engines were probably used before the HHR came out.
As I read on, it seemed it was all mentioning vehicles from 2003 and older. Since the HHR came out in 2008, are our vehicles excluded from this and the issue corrected by then? 2008 may not even be the key year since the engines were probably used before the HHR came out.
03-31-2012, 04:49 PM
#5
Senior Member
Join Date: 10-13-2009
Location: sterling hts mich.
Posts: 186
It was a gasket problem. The intake gaskets were plastic with rubber o rings GM used this design gasket from when the 3400 came out in 1994. I replaced intake gaskets on a 94 G/A 3400 and that used the old green coolant. I have also replaced many with dex cool but I don't think it is dex cool. The 4.3 and v-8 vortecs, 3800 series 2's and the 3100 & 3400's all used the same type of intake gaskets. They all need to be replaced. They will all start leaking coolant. It was a poor design using plastic. The bulletin has a new part# and it is a metal gasket similiar to the good fel pro's.
03-31-2012, 05:02 PM
#6
Senior Member
Thread Starter
Join Date: 09-24-2011
Location: Long Island, NY
Posts: 104
Oh and no offense to the pre-2008 HHR owners. The incorrect year was an oversight on my part.
03-31-2012, 06:28 PM
#7
Senior Member
Join Date: 07-05-2008
Location: Akron Ohio
Posts: 5,464
The truth is many people rush to judgement on Dex Cool before they have all the facts. The Cause and Effect are not always the same.
Dex Cool works fine if used properly. If you let it get weak it can be an issue. Also there were some gasket issues that were not the fault of Dex Cool but more the issue of the gasket itself.
If Dex Cool was bad every single car would have an issue but most never see a problem and many that do have issues created by an unrelated issue or poor use of the product.
Keep the mixture strong an to the right ratio and seldom is there an issue.
Dex Cool works fine if used properly. If you let it get weak it can be an issue. Also there were some gasket issues that were not the fault of Dex Cool but more the issue of the gasket itself.
If Dex Cool was bad every single car would have an issue but most never see a problem and many that do have issues created by an unrelated issue or poor use of the product.
Keep the mixture strong an to the right ratio and seldom is there an issue.
Thread
Thread Starter
Forum
Replies
Last Post