2000 Nissan Maxima/115000. No Check Engine Light.
In last couple of years, the car may not have gone through the maintenance of spark plug/wire change. However, I've doing regular oil changes.
The temperature is behaving normally. Once the car starts, within few min (may 5-10 min) of car running, the temperature gauge goes from below the cold mark, to between "C" and "H". I've changed the Battery and Alternator very recently.
The cold temperatures I'm talking about is about 30-40 F.