Castrol Rust Remover is used to loosen and remove rust from ferrous metal parts, chassis sections, and tools affected by corrosion. Its chemical formulation also provides lubricating and anti-corrosive properties, helping you free up seized components while reducing the likelihood of future rust build-up. Key features: --Penetrating Lubricant Formula: Developed to penetrate deeply into rusted threads and joints, this formula loosens seized parts with minimal effort and restores basic mechanical movement in corroded assemblies. --Anti-Corrosion Additives: Contains dedicated anti-corrosion agents that leave a protective film on treated surfaces, helping to inhibit further rust formation and extend part lifespan after treatment. --Resin-Free Formula: Ensures compatibility with a wide range of materials, including plastics and rubber, without causing damage or degradation.