Penetrates to the base metal and remains soft and pliable, making it self-healing, non-drying and impossible to crack. Provide lasting protective barrier from moisture , salts, calcium and sodium chloride. Migrates to inaccessible areas. Provides lasting lubrication for moving parts. Will not harm most paints, plastic or oi-resistant rubbers. PROTECTS vehicle underbodies,salt spreaders, plows, electrical connections, pivot points, nuts, bolts, chains, cables. Keeps snow and ice from building up on metals and plastics like plow blades, now blowers chutes and headlights. Keeps lock from freezing .