I went for a drive in the mountains today, top down. It was a sunny, dry day, fairly warm for November 1st, though the air temperature dropped noticeably and the road surface was damp on north-facing descents.
After a few miles, I noticed that the multi-function dial (fuel gauge/water temp/oil pressure) had misted up internally. Then a while later, the speedo did the same thing. A few miles further on, they both cleared.
Nothing to worry about, of course, but do they all do that?
