FORD 2002 Focus v.2 - Manual (Page 274)

Maintenance and Specifications
274
ENGINE COOLANT
Checking engine coolant
The concentration and level of
engine coolant should be checked
at the mileage intervals listed in the
Scheduled Maintenance Guide".
The coolant concentration should
be maintained at 50/50 coolant and
water, which equates to a freeze
point of -36 ° C (-34 ° F). Coolant
concentration testing is possible
with a hydrometer or antifreeze
tester (such as the Rotunda Battery
and Antifreeze Tester, 014ćR1060).
The level of coolant should be
maintained at the "cold full" or
"cold fill range" level in the coolant
reservoir. If the level falls below,
add coolant per the instructions in
the Adding Engine Coolant
section.
Your vehicle was factoryĆfilled with
a 50/50 engine coolant and water
concentration. If the concentration
of coolant falls below 40% or above
60%, the engine parts could
become damaged or not work
properly.