Does a 1997 Mercury mountaineer need antifreeze to cool the engine?
Yes , it came from the factory with a 50 / 50 mix of antifreeze and distilled
water in the cooling system . The antifreeze in the mixture provides freeze ,
boiling , and corrosion protection ( the corrosion protection does " wear out " )
The other parts in the engine cooling system , such as the water pump ,
engine thermostat , engine cooling fan , hoses etcetera also need to be