More and more engine manufacturers are using aluminium to reduce weight in cooling systems. But there is a price for weight reduction: Aluminium is the most sensitive material in the system, and corrosion is its biggest problem. Corrosion is not a question of age; corrosion attacks an engine as early as 2,000 hours or 400,000 km.
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Oxygen in the cooling system reacts with metal parts
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In the engine, oxidation = rust
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Water pumps, radiators, thermostats and manifolds are affected
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Radiators get blocked
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Engine overheats = repair costs, downtime
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Leaks appear
No
