Castrol Radiator Cleaner is designed to help restore efficient cooling system performance by removing internal build-up that restricts coolant flow. It works by dissolving corrosion, oil residues and deposits that can accumulate inside your radiator and block key passages, leading to reduced heat dissipation and potential engine overheating.Explore the key features that make this cleaner an effective choice for maintaining your vehicles cooling system:Surfactant-Based Cleaning Additive: Formulated with a blend of cleaning agents that break down rust, scale and internal residues, this helps to restore consistent coolant circulation and reduce the risk of overheating.Oil and Grease Binding Formula: Uses specialised emulsifiers to bond with contaminants such as oil and grease, allowing them to be fully removed when the system is drained, so your fresh coolant performs as intended.Simple 30-Minute Engine Cycle: Requires just a single 30-minute run time during engine operation, allowing the