Mercury 1996 Cougar Manual page 263

3. Turn the engine off.
4. Check the fluid level on the dipstick (which
is highlighted in yellow in your vehicle). The
fluid level should be between the arrows in
the FULL HOT range, which is marked on
the side of the dipstick, opposite the side
marked FULL COLD. Do not add fluid if the
level is within the FULL HOT range.
5. If the power steering fluid is low, add fluid
in small amounts, continuously checking the
level, until you reach the FULL HOT range.
Do not overfill.
6. When you are finished, put the dipstick back
in and make sure that it fits snugly.
The dipstick for power steering fluid
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