Penn Yan Aero FAQs > Engine Details > Why do some parts have corrosion and others do not?
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Your engine is made from many different types of materials. Steel parts will rust faster than aluminum parts will corrode. And magnesium, under the right conditions, will corrode faster than either steel or aluminum. Plus, these dis-similar metals can react to each other.
Last updated on May 15, 2012 by Jim Rowe