Is the use of tap water o r low-quality coolant in Pakistan contributing to premature radiator corrosion in Changan Kalam?

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Is the use of tap water o r low-quality coolant in Pakistan contributing to premature radiator corrosion in Changan Kalam?

Mixing regular water with coolant may cause rust and corrosion inside the radiator. Are local workshops using the right coolant mix?

Qalb E Momin asked on 25 Jun 2025 16:39:56 pm

1 Answer

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Car Mechanic Expert - on 25 Jun 2025 16:58:07 pm

Yes — this is a major issue.

Many workshops mix coolant with tap water, which:

Contains minerals and impurities that corrode metal fins and aluminum core.

Leaves calcium/lime deposits, blocking coolant passages.

Low-quality coolants degrade faster and offer less corrosion protection.

➡️ Only use pre-mixed, branded coolant like Caltex, Havoline, ZIC. Avoid topping off with plain water.