Quote:
Originally Posted by paul e
What’s the dew/frost point? Humidity at -29° being 82% doesn’t mean there’s a lot of moisture in the air.
The dew point for those values is -31°.
I think your leak is back.
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Last time I checked my car is a smidge warmer than -31 once I turn the heat on. Snow melts, inside gets moist and gamey, and an hour stop at a store ends up with all my windows frosted up inside.
Nobody said his car at -30C was frosted inside. Couple in a trip to the car wash, and you've now sucked in air at 100% humidity into the cabin. What the OP is experiencing is 100% normal for the outside conditions, as well as what he did (car wash).