Ford Focus 2004 Owner's Manual page 209

Add only brake fluid that meets the
Ford specification. Refer to section
Vehicle fluids, page 213 onwards.
Have the system checked for
leakage by an expert as soon as
possible. Ford authorized repairers
are recommended.
Wipe the cap and the top of the
reservoir clean with a dry cloth
before unscrewing the cap from the
reservoir. Absolute cleanliness must
be observed when topping up with
brake fluid.
If this fluid comes in
contact with a painted
surface, wipe it off immediately
with a wet sponge and rinse with
plenty of water.
Use only brake fluid which is
paraffin-free.
The symbol on the brake fluid
reservoir indicates a paraffin-free
brake fluid.
Under heavy duty conditions (such
as trailer towing, extensive use of
vehicles in mountain areas, etc.)
brake fluid renewal should be
carried out at the same time as any
brake pad renewal.
Maintenance
201