Prestone Dex Cool vs Carquest Dexcool

[A_User55555]

I was reading an old thread here how the "old" Dex-Cool formula uses Potassium 2-ethylhexanoate. I bought a bottle of Carquest Dex-Cool yesterday and this is the ingredient that's inside it.

However, apparently Prestone Dex-Cool uses Sodium-2-ethylhexanoate in their formula. This is also the case on the AC Delco brand of Dex-Cool.

Here is the thread:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/2471928/1



Is there really a difference? Supposedly, Potassium 2-ethylhexanoate is more "reactive" than Sodium. When reading the old thread, I couldn't determine a "scientific" conclusion why that's true.


Should I spend the extra few bucks and go with the Prestone Dex-Cool instead? Think the Sodium will prevent corrosion better?

 

[Snagglefoot]

If Prestone Dexcool matches with the current AC Delco Dexcool, that's enough for me. Thanks for sharing.

 

[A_User55555]

This is the Prestone SDS:

http://s7d9.scene7.com/is/content/GenuinePartsCompany/1414793pdf?$PDF$


Here is the AC Delco SDS:

http://www.worldpac.com/tagged/ACD_Dexcool_10-101_EN.pdf


They both look mostly the same except the different brand logo

 

[Snagglefoot]

And of course the're still both 80 to 95% ethylene glycol.

 

[Snagglefoot]

Here is a shot of the Prestone Dexcool.

 

[LMG1]

The label on the back of a jug of Prestone DEX-COOL Approved Extended Life 50/50 Prediluted Antifreeze/Coolant states that it is the same factory-fill blend used by General Motors manufacturing. You can pick it up at Walmart for under $13.