While on the road to & from S Carolina, during some of the nastiest heat & humidity I've ever seen, 70+ mph all day, AC cranked to the max, I saw 230 - 234 as max temps, with avg constants around 218- 224...running hard 12 hrs a day.

The only thing I've done that may be different is to add a surfactant to the coolant...about 4 - 5 yrs ago.

Suzy is one HOT little buggy.