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Rusty I Beams

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Corrosion like this is pretty typical in the Rust Belt where salt is used on the roadways during the winter. This underbody photo is of a Ford E-350 two-wheel-drive box truck. The corrosion even attacked the oil pan on the 7.3L Power Stroke engine, creating a hole. A good way to keep this corrosion from happening is to keep grime from accumulating under the truck.