Engine Coolant - Ford Windstar Owner's Manual

(VOCs) may restrict use of the most common antifreeze,
methanol. Washer fluids containing non-methanol antifreeze
agents should be used only if they provide cold weather
protection without damaging the vehicle's paint finish, wiper
blades, and windshield washer system.
Windshield washer fluid contains methanol which is
poisonous.
When adding windshield washer solution, be sure to observe all
warnings indicated on the washer solution container.

Engine Coolant

Checking the Engine Coolant
Your vehicle's engine coolant protects the engine from
overheating in the summer and from freezing in the winter.
Check the level of the engine coolant at least once a month, but
preferably each time you stop for fuel. Simply check the coolant
reservoir, located in the engine compartment. The coolant
should stay slightly above the "FULL COLD" mark.
Adding Engine Coolant
Do not put engine coolant in the container for the
windshield washer fluid.
If sprayed to clean the glass, engine coolant or antifreeze could
make it difficult to see through the windshield.
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WARNING
WARNING