Engine warmed up, then went cold.
Today I was sitting on break in my car, and after it warmed up, put the heat at like fan speed 2, and after a minute or two, I see the engine temp gauge slowly drop back to cold. It didn't go all the way to cold, I turned off the heat, and it climbed back up.
Should I be worried that this happened? To be fair, it's been below freezing around lately. Anyone else experience this?