Anodized aluminum cylinders, found on many late-model cars, should not be honed because their hard surface layer will be removed and they will corrode.

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Anodized aluminum cylinders should not be honed because the hard surface layer, which provides corrosion resistance, will be removed during the honing process, making the cylinders more prone to corrosion.

Anodized Aluminum Cylinders, Found on Many Late-Model Cars, Should Not