I still believe your thermostat is sticking, just replace it with a new 195 degree thermostat. Auto parts stores are open today, and as said above avoid "fail-safe" thermostats. If you go to a better quality store like NAPA, perhaps you can find a Stant which is a good quality thermostat. And if you can find a Stant SuperStat, better yet. There's no chance a low-end auto parts store like Autozone would carry anything that good.The gauge actually goes to red and maxes out. When I lift the hood it is steaming. I killed it as soon as the gauge went red. Let it cool off before starting again to get it home. Had to repeat that process several times to get it home, hopefully, without harm.