pag malaming panahon, walang kwenta water coolant. misnomer yung term na coolant. what the "coolant" actually does is to raise the heat capacity of water so that it boils at a slightly higher temp. pero para mangyari yan, malaking volume ng coolant ang kailangan mo, as in 1:1 ratio coolant:water or more. Yung anticorrosive effect naman is not really because of the coolant - which is either ethylene glycol or propylene glycol. Meron kasing anticorrosive additives yung coolant. Sa kin, mas mabuti pa kung makakabili kayo ng anticorrosive additive na pwede nyo ihalo sa radiator water. mas may pakinabang pa yun kesa sa coolant. Pero tama na dapat distilled water ang gamitin, wag mineral water, tap water, carbonated water or holy water