Jeep COMPASS Repair Manual page 13

Corrosion Protection
Crevice corrosion is a form of localized attack that occurs in areas on metal surfaces exposed to the elements.
Examples include spot weld lap joints, threaded or riveted connections, gasket fittings, porous welds, valve seats.
Pitting is the corrosion of a metal surface at points or small areas which look like a small hole in the metal.
Galvanic corrosion is the type that occurs when dissimilar metals are in electrical contact while immersed in an
electrolyte.
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