Does the use of tap water instead of proper windshield washer fluid contribute to streaks in Changan Kalam?

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Does the use of tap water instead of proper windshield washer fluid contribute to streaks in Changan Kalam?

In Pakistan, many drivers fill washer tanks with untreated water. Could this be causing residue buildup and streaking on the glass?

Lubaba asked on 24 Jun 2025 17:29:20 pm

1 Answer

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Car Mechanic Expert - on 24 Jun 2025 17:32:51 pm

Yes. Tap water in Pakistan often contains:

Minerals like calcium and magnesium hard water

Chlorine o r sediment in some regions

These leave white stains, streaks, o r even film buildup on the windshield after drying. Over time, this reduces glass clarity and causes smudging even after wiping. Using proper washer fluid helps break down dirt without leaving residue.