Immortality
When Mercury is at any temp. Over -47 it will stay a liquid
When its warm
Your thermostat is broken
Stay at the factory temp.
Most likely the temp sensor is bad
The switch is set to a temp, and will close when the temp is reached.
The max temp is somewhere around 240 or 250. Just stay under or around 210 and you should be fine.
Well the same reason fire doesn't stay at the same temp. is always changing
Raw meat can get bacteria in it after one hour at room temp.
Normally the temperature will stay at -214 degrees celsius.
Broken engine fan temp sensor.
Two to three days at room temp is fine