Ford 1997 Contour Manual page 189

Check the engine coolant level in the engine coolant reservoir at
least once a month using the following guidelines.
When your vehicle's engine is cool, the coolant level in the
engine coolant recovery reservoir should be at or above the
MIN mark. When the engine is hot, the coolant level should be
at the MAX mark. If the level is below the indicator mark in
either condition, coolant may need to be added.
The coolant additives also protect the entire cooling system from
internal passageway corrosion and these additives lubricate the
water pump. The coolant should be serviced as noted in the
Maintenance Schedule booklet.
Adding Engine Coolant
Do not put engine coolant in the container for the
windshield washer fluid.
If sprayed on the windshield, engine coolant could make it
difficult to see through the windshield.
When the engine is cool, add a 50/50 mixture of engine coolant
and water to the engine coolant recovery reservoir — DO NOT
ADD DIRECTLY TO THE RADIATOR. Add straight water only
in an emergency, but you should replace it with a 50/50
mixture of coolant and distilled water as soon as possible.
Check the coolant level in the coolant recovery reservoir the
next few times you drive the vehicle. If necessary, add enough
of a 50/50 mixture of coolant and water to bring the liquid
level to the fill line on the reservoir.
Never remove the coolant recovery cap while the engine
is running or hot.
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