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Originally Posted by Charlie
My coolant level has dropped to just below the MIN. mark on my '97 Boxster. Are there any acceptable substitutes for the Porsche brand antifreeze/coolant? I have some PENTOSIN PENTOFROST SF (G001200?) that is silicate, nitrite, amine and phosphate free which seems like the right substitute, but it is a pink color, and the stuff in my Boxster is green. I have always been told not to mix colors. Advice?
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You have the right stuff (Pentosin G12). The green stuff is wrong. Flush it and refill.
50/50 G12 and distilled water.