Question corrosive inhibitor and coolant r way too expensive?

[I l0vepc]

is there a alternative way to make distilled water anti corrosive cuz the the coolant or the corrosion inhibitor is way too pricey in india..

 

[velocityg4]

Regular automotive anti-freeze (ethelene glycol) mixed with distilled water should work. About 15% anti-freeze to distilled water. Don't use one made to prevent leaks. It won't have any biocides to inhibit growth. Which isn't a problem in cars due to heat.

To maximize heat transfer you'll need a surfactant (like dish soap). This requires careful measurement. I don't know the ratio.

For a biocide you could use copper sulfate or iodine. Bleach is too corrosive.

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