Quote:
Originally Posted by John V.
I have no reason to defend Dex-Cool but my own view was that Dex-Cool came about at the same time GM was using a poorly designed intake gasket.
I have Dex-Cool in my '04 GP GTP, supercharged 3.8, also owned since new Oct '03. It got changed after 5 years and again after 11-3/4 years.
Have never had to refill coolant in between those change intervals.
Still has original water pump, radiator, and radiator hoses. I replaced the T-Stat some years ago. Has 130k miles now.
Still, I don't think I would use Dex-Cool in any older engine. If you are running a copper core radiator and/or heater core, I would stick with the traditional coolant.
Some useful info here.
https://blog.hemmings.com/index.php/...of-antifreeze/
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Great article there John. Thanks guys for the input. Leaning towards just sticking with basic old green coolant.