What causes black sludge in radiator?
Corrosion is one of the most common causes of black substances in a radiator. While losing its protective qualities, PH levels change and corrosion stability. Once started, corrosion, mud and scale accumulate throughout the cooling system, including the engine.It's one of the most common causes of black stuff in a radiator. When it loses its protective qualities, PH levels change. Rust, sludge, and scale build up in the cooling system when this starts.
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