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I've been running Straight Toyota Red @ 30/70 with Steam Distilled Water, no matter how hard I boost or how long I sit in traffic the temp never fluctuates at all.
Same here. I run 30/70 with distilled water and a bottle of water wetter. Running a Koyo rad, Spal fans, TRD thermostat. My temp always sits between 82C and 85C.