Hey guys

Số I'về noticed today and a few days ago something interesting with the coolant gauge in mỹ ZJ. during the colder mornings, the coolant temp will rise to about 210, then suddenly drop to the quarter mark quickly.

I'm not sure what might be causing this? Part of me worries thể T-stat, but not sure. I'về only noticed it lately on these colder days, and only when I have the heat running inside my car, but for all I know it could be happening a lot more and I'm only now noticing.

Anyone have ideas?

Thanks