So with thermostats there seems like a few, but overall, there's about 6 or so different sizes, and then each size has a couple of different opening temps. Like 77, 82, 88 and 92 degrees.

As for winter and summer thermostats, only necessary in snowy countries like America or Europe.

If you find your car heats up easily, it might have a higher opening thermostat. Simple solution is put a lower one in it.

Or you've got the inverse of that.