What temp should my 1995 GT run at. I don't have the stock gauges and it says it runs at 210 and on hot days it goes up to 220. I just bought a 180 thermostat. What else should i do and what would happen if it keeps runnin that hot?

 

Add more water and less anti-freeze.
Add a bottle of REDLINE water wetter.
Insure that the fan is working properly.
Change to a lower t-stat.
Change to better radiator.