Great questions.

1. when going from neutral/park into drive there is a momentary change in sound. Nothing changes when the wheels are moved side-to-side.
2. No change in sound when the headlights are switched on.
3. Only driven it once for more than 15 minutes, but it was before noticing the noise ...

When I turn on my 1994 940 wagon, And put it into gear, occasionally, I hear a high-pitched "whirring" noise, kind of like a theremin (i.e. kinda spooky sounding). It is not very loud and it changes pitch as the speed of the car increases. At some point, perhaps when going 15mph (25kmph) or faster ...

More of an all-purpose question, but since I have a 940, I figured I'd start here. There's extensive paint peeling, etc. on the hood, roof, and elsewhere (see images below). Obviously, getting it repainted is the endgame, but in the interim, are there any suggestions for how to avoid further damage ...