I just added a third radiator to my Cayman but unfortunately didn't check Durametric engine temps until after the work was done. Now the Durametric is showing really high engine temperature of 114°C (237°F) which can't be correct. I say can't be correct because supposedly the dash always shows a temperature of 194°F if the temperature is between 185-215°F. Here's my dash and the Durametric readings when driving on the highway with a full warmed engine:
