Interesting information for you guys but I'm not sure if it is significant.
I was at the local GM dealership today picking up an O-ring for my PCV valve and I noticed a shelf of newly packaged Dexcool.
I queried the service manager and told him about the concerns we have with it.
He told me he hadn't heard of any problems
but said that just before Christmas, GM pulled all the old Dex off the shelf and replaced it with Dex in a newly revised container.
I wonder if they finally changed the formulation