I have a 91 Vanagon GL Westfalia with about 95,000 miles on it.  Am having a
problem where the front end starts emitting a high pitched squeaking /
whistling sound after the vehicle has been driven about 20 minutes.
Possibly from the driver side wheel well, but hard to be sure.  I was
wondering if this falls under any well known "Vanagon syndromes" that I
should look at first?  I had the brakes checked.  They are a bit worn but in
decent shape, a bit of a groove that causes slight wobbling when one brakes,
but plenty of life on the pads and not in need of replacing.  Problem only
occurs after driving 20+ minutes.  Whistling goes away when I brake.