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Another antifreeze question -- late 80's model GM vehicles

I want to top off the coolant levels in my 1988 Olds. The car came with the traditional green coolant. I posted before and was advised to go with the original stuff. I located Prestone 50/50 (not green -but states on the label suitable for all makes and models) and Peak Ready Use (which is 50/50 water/antifreeze and the original green). Would either be okay? Thanks

Yes. But why buy water? Get the original strength stuff and cut it yourself…