I have no coolant loss, period. As for the interior humidity, I can't believe it's really high. When my chrysler convertible developed a leak and the humidity got up to more than 30% outside, it smelled very musty inside the car, especially in the winter. One time, I left the top and all the windows down, it rained and flooded the car till water ran over the door sills. I vacuumed it up as best I could, put the top and windows up and let it dry. I didn't get condensation nearly as bad, and the carpet squished when you got into the car. I guess I'll have to try leaving my window open.
