1996 Ford Thunderbird Owner's Manual - Page 261

If brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately. If the fluid is low, carefully clean and remove the cap from the reservoir. Fill the reservoir to the MAX line with Ford High Performance DOT 3 Brake Fluid C6AZ-19542-AA, C6AZ-19542-BA, or equivalent DOT 3 fluid meeting Ford specification ESA-M6C25-A. RWARNING If you use a brake fluid that is not DOT 3, you will cause permanent damage to your brakes. Do not fill the reservoir above the MAX line. The brake system fluid reservoir If you find that the fluid level is excessively low - below the seam or ridge on the outside of the plastic reservoir - have the brake system inspected. 259