what is the actual preferred temp setting when using the defrost setting? I used to think it was hot until I found out that most vehicles use the A/C when set to defrost, which makes me think that I should set it to cold. Personally, I think the windows defrost faster when I set it to cold.

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1987 2.3/TK5, 125K.

I personally use the cold setting to defrost my window. The hot makes the inside all hot and muggy. lol but the both work.