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Should be the same across the board but,..I do use a coolant additive with some gm dexcool. I use the DEI radiator relief blue coolant additive...which I used in a few of my vehicles,...it reduced the temperature in each one significantly enough to want to recommend it to someone. It's cheap too...like less than 8 bucks I think(summit sells for 11.97). Bought mine from race part solutions.
Reason why I tried it....one of our shop guys has a TB SS,..which have coolant temp issues... adding to his vehicle GREATLY reduced temps. So I tried myself...worked well for me as well. Used to use water wetter like 15 years ago...dunno if still around.