Dexcool eats gaskets?
#1
Senior Member
Posts like a Corvette
Thread Starter
Join Date: Aug 2004
Location: South Bend, IN (hometown) Indianapolis,IN (college)
Posts: 1,598
Likes: 0
Received 0 Likes
on
0 Posts
![ELMACHOGERACHO is on a distinguished road](https://www.gmforum.com/images/reputation/reputation_pos.gif)
![Default](https://www.gmforum.com/images/icons/icon1.gif)
i was in class today and my teacher told me that dexcool eats away gaskets. not to be stupid, but is this the reason y the upper manifold leaks? would flushing the dexcool and going to the normal green stuff solve this problem?
#2
Senior Member
True Car Nut
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Likes: 0
Received 1 Like
on
1 Post
![SSEimatt93 is on a distinguished road](https://www.gmforum.com/images/reputation/reputation_pos.gif)
![Default](https://www.gmforum.com/images/icons/icon1.gif)
No, the upper intake manifold failiure pertains to the manifold itself, its plastic.
Secondly many people have been running dex from the factory with no problems at all, its a very good coolant, just dont mix it with the green stuff, or you've wasted your money. If it came with green from the factory, keep it geen...vice versa. Dex-Cool has different properties, it doesn't break down as fast as standard Gylcol based coolant.
As far as it eating gaskets..i could see that if you let it go for a long time and the PH was way off balance.
Secondly many people have been running dex from the factory with no problems at all, its a very good coolant, just dont mix it with the green stuff, or you've wasted your money. If it came with green from the factory, keep it geen...vice versa. Dex-Cool has different properties, it doesn't break down as fast as standard Gylcol based coolant.
As far as it eating gaskets..i could see that if you let it go for a long time and the PH was way off balance.
#3
Junior Member
Posts like a Ricer Type-R
![Default](https://www.gmforum.com/images/icons/icon1.gif)
Dexcool has been known to be harsh on OEM gaskets, at least more so than standard glycol (green) based coolants.
A dexcool equipped car is more likely to see lower intake manifold gaskets fail than a 'green' coolant car. Newer gasket materials and factory updates may level the playing field somewhat.
This is why converting from one to the other is so dangerous. Deposits left by one may be broken down by another.
A dexcool equipped car is more likely to see lower intake manifold gaskets fail than a 'green' coolant car. Newer gasket materials and factory updates may level the playing field somewhat.
This is why converting from one to the other is so dangerous. Deposits left by one may be broken down by another.
#4
Senior Member
True Car Nut
Join Date: Dec 2003
Location: Corn Fields, IN
Posts: 2,767
Likes: 0
Received 0 Likes
on
0 Posts
![John Deere Boy is on a distinguished road](https://www.gmforum.com/images/reputation/reputation_pos.gif)
![Default](https://www.gmforum.com/images/icons/icon1.gif)
There was a class action lawsuit against dex-cool because of its gasket eating nature. Dad and I replaced the LIM gaskets on his 98 Chevy in 2003.
#5
Guest
Posts: n/a
![Default](https://www.gmforum.com/images/icons/icon1.gif)
I feel that Dex is somewhat responseable for early gasket failures...
But, GM seems to be going to a newer generation of redesigned gaskets to help this problem...
If memory serves you can actually get a Fel-Pro set that would be the second generation, If you are going to use Fel-Pro I reccomend the 2nd generation...
If you are not going to use Dex Cool, I highly reccomend Prestone Longlife( Orange, and compatible with Dex Cool)... I have used the stuff in other cars with great results...
As for the Upper intake, green, red or orange will not matter, the upper gaskets, and upper intake will still fail in the same manner... Heat being the #1 issues for the plastic...
Bill and I have chatted about this before, and it does seem that the Dex Eats the lower gaskets a bit quicker than the green..![Wink](https://www.gmforum.com/gm/images/smilies/wink.gif)
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
But, GM seems to be going to a newer generation of redesigned gaskets to help this problem...
If memory serves you can actually get a Fel-Pro set that would be the second generation, If you are going to use Fel-Pro I reccomend the 2nd generation...
If you are not going to use Dex Cool, I highly reccomend Prestone Longlife( Orange, and compatible with Dex Cool)... I have used the stuff in other cars with great results...
As for the Upper intake, green, red or orange will not matter, the upper gaskets, and upper intake will still fail in the same manner... Heat being the #1 issues for the plastic...
Bill and I have chatted about this before, and it does seem that the Dex Eats the lower gaskets a bit quicker than the green..
![Wink](https://www.gmforum.com/gm/images/smilies/wink.gif)
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
#6
Junior Member
Posts like a Ricer Type-R
![Default](https://www.gmforum.com/images/icons/icon1.gif)
The 2nd Gen FelPro gaskets Don mentioned do appear to be a different material, and even a slightly different design. Much improved for either the green or orange coolant.
We've long suspected but never verified that FelPro makes the OEM AC Delco gaskets.
We've long suspected but never verified that FelPro makes the OEM AC Delco gaskets.
#7
Guest
Posts: n/a
![Default](https://www.gmforum.com/images/icons/icon1.gif)
Originally Posted by willwren
The 2nd Gen FelPro gaskets Don mentioned do appear to be a different material, and even a slightly different design. Much improved for either the green or orange coolant.
We've long suspected but never verified that FelPro makes the OEM AC Delco gaskets.
We've long suspected but never verified that FelPro makes the OEM AC Delco gaskets.
![Wink](https://www.gmforum.com/gm/images/smilies/wink.gif)
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
Thread
Thread Starter
Forum
Replies
Last Post
2000SilverBullet
Your Ride: GM Pictures & Videos
30
07-26-2004 10:03 AM