Use distilled water for now. Don't take a chance and mix
I was in the same predicament as well. Mine also had greenish coolant and was afraid to mix. I just topped of with distilled water until I did a flush and refill with Porsche Pink
I believe that Porsche changed their life long coolant from green to pink somewhere in the mid 2000s
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2002 S - old school third pedal
Seal Grey
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