Quote Originally Posted by chrshaha View Post
mas mabilis po ba talaga mag evaporate ang distilled water? chine check ko po kasi yung kotse, baguhan kasi ako nabili ko po ng second hand and last time naubusan ako ng coolant bigla. triny ko palitan ng radiator cap parang hindi naman na gaano na babawasan compared as before. siguro third of a cup po ang bawas ngayon pag ginagamit, dahil sa evaporation kaya yun or may leak?
Car year, make and model?

Generally speaking, hindi dapat gumamit ng distilled water. It should be premix coolant designed for your engine. For example, if it's a Toyota, use Toyota Super Long Life Coolant. Check owners manual for the correct coolant.