Check the specs on a modern 180 degree thermostat - report here the final/fully-open operating temperature.
Per Stant
Thermostats have a “rated” temperature such as 180F or 195F; This is the temperature the thermostat will start to open, give or take 3
degrees; The thermostat fully open about 15-20 degrees above its rated temperature
No concerns with those numbers ^ as long the radiator is clean and functioning.
Along with an added PCV the crankcase should be more than happy when those contaminates are “boiled off.”
