Liqui moly 6115 cavity protection white transparent 500ml liqui moly 6115 p this white transparent cavity protection 500ml from liqui moly is a corrosion inhibitor with very high penetration and heat resistance once dry a very tough permanently soft water repellent protective film is formed making it ideal for supplementing cavity protection on new vehicles p p also used for retreating sealants after 2 3 years supplementing corrosion protection following accident repair and rust