Grand Vitara 2WD V6-2.5L (2004)
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Even in a market where no freezing temperature is anticipated, mixture of 70% water and 30% ethylene glycol antifreeze
(Antifreeze/Anticorrosion coolant) should be used for the purpose of corrosion protection and lubrication.
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"Hard water", if used, will foul up the cooling circuit by scale formation. Tap water available from city water supply is the best available water,
in a practical sense, for the cooling system. Distilled water is ideal but is a luxury in most cases.