Rust Shock+ f22 is a highly effective tool that loosens seized injectors, glow and spark plugs. A special formulation creates the effect of a „cold shock“ (up to -40 °C) forcing the rust layer to break and enabling the active ingredient to penetrate quickly and effectively. Ultra-fine PTFE particles improve the sliding behavior during disassembly. The product is free of acid and silicone and compatible with most plastic materials.