My 68 stock original is running on the warm side the last few weeks since emerging from hibernation the last few weeks . Last few weeks have been typical summer temperatures with an abundance of humidity, the car is running 195- 215 sitting in traffic. Bringing up the RPM’s will drops the temp 10-15 degrees.’ On the hwy and at night the temp is in the -80-190 range . I flushed the radiator ( with water ) 6 weeks ago to get the old antifreeze out and put in new thermostat ( 160 ) . Anything else I’m overlooking Water pump changed 5 yrs ago as well as radiator boiled out at that time . Car sat for. 3 + yrs and I’m remembering 185 degrees as the ceiling .