On Thu, Aug 19, 2010 at 8:45 AM, Karl Wolz <wolzphoto@q.com> wrote:
> DOT 4 gives a greater margin of safety due to its higher boiling point, but
> is not "required"; more like advisable. �They originally came with DOT 3.

The brake fluid reservoir on my '89 syncro specifies DOT 4. Can't
speak for prior years.