Mazda speed 6 2007 Manual page 269

If it's at or near LOW, add enough coolant
to the coolant reservoir to provide
freezing and corrosion protection and to
bring the level to FULL.
CAUTION
Radiator coolant will damage paint.
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Rinse it off quickly if spilled.
Use only soft (demineralized) water
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in the coolant mixture. Water that
contains minerals will cut down on
the coolant's effectiveness.
Don't add only water. Always add a
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proper coolant mixture.
The engine has aluminum parts and
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must be protected by an ethylene-
glycol-based coolant to prevent
corrosion and freezing.
DO NOT USE coolants Containing
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Alcohol, methanol, Borate or
Silicate.
These coolants could damage the
cooling system.
DO NOT MIX alcohol or methanol
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with the coolant. This could damage
the cooling system.
Don't use a solution that contains
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more than 60% antifreeze.
This would reduce effectiveness.
Owner Maintenance
NOTE
If the FL22 mark is shown on or near
the cooling system cap, use FL22 type
engine coolant. If engine coolant other
than FL22 type is used, the engine
coolant must be replaced earlier than
the specified replacement interval
indicated in the scheduled maintenance
(page 8-3).
If the coolant reservoir is empty or new
coolant is required frequently, consult an
Authorized Mazda Dealer.
Maintenance and Care
8-15