FORD 1998 Explorer - Manual (Page 164)

BRAKE FLUID
Checking and adding brake fluid
Brake fluid should be checked and
refilled as needed at least once each
year:
1. Clean the reservoir cap before
removal to prevent dirt or water
from entering the reservoir.
2. Visually inspect the fluid level.
3. If necessary, add brake fluid until
the level reaches MAX. Do not fill
above this line.
4. Use only a DOT 3 brake fluid
certified to meet Ford specifications.
Refer to Lubricant specifications
in the Capacities and
specifications chapter.
Brake fluid is toxic.
If you use a brake fluid that is not DOT 3, you will cause
permanent damage to your brakes.
MAX
Maintenance and care
164