The reason Dex-cool has ever been an issue was because when you mix standard coolant and dex-cool, it won't cause any issues. If you pay attention and use dex-cool and only dex-cool, I have never seen any issues. I worked at a kauffman tire for 2 years, and and oil change plce for another 2, always doing coolant flushes, never seeing any issues. Thats just a small group of people who had an issue, maybe .001$ of all GM's sold, and found someting to blame it on, thats why GM will never come out and say there was ever an issue. Mixing is the problem, not Dex-cool alone.

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