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Hey guys, I've had a crack at the search function, maybe I'm too dumb but I've got an issue I can't seem to figure out myself. My S15 would previously have cooling challenges on long hills, hot ambient temps etc, with temps sometimes getting up near the 100 deg C mark. Usually between 85 & 93 on long highway drives though. As such, I decided to put in a bigass radiator, replace the water pump and install a new thermostat. I got a Tridon TT2028-170, wanting to keep the opening temp the same, but higher flow above 80 degrees. With this opening temp (76.5 degrees), and a bigger radiator