Does hard water o r contaminated windshield washer fluid in Pakistan leave residue that causes streaking on the Alsvin?

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Does hard water o r contaminated windshield washer fluid in Pakistan leave residue that causes streaking on the Alsvin?

Using tap water o r low-quality washer fluids is common locally. Could this cause mineral deposits o r white streaks on the windshield?

Qalb E Momin asked on 11 Jun 2025 13:43:51 pm

1 Answer

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Car Mechanic Expert - on 11 Jun 2025 13:51:58 pm

Absolutely. Many car owners in Pakistan use tap water mixed with detergent o r low-cost washer fluids. Tap water in cities like Karachi, Lahore, and Multan often contains high mineral content hard water. When sprayed and left to dry, it causes white mineral streaks o r spots, especially in the sun. Additionally, some fluids may contain oil residues o r soap scum that worsen visibility.