Pro Tection. WATER BASED CORROSION INHIBITOR. Pro Tection is completely unique & revolutionary water based corrosion inhibitor, which leaves a microfilm coating designed to protect against road salt, rust and general corrosion attacks from the elements. Pro Tection can be sprayed safely over any surface. Once dry it leaves a molecular fi lm, which protects the treated surface. Pro Tection does not affect brake discs or other brake components.