Use Restore Pre-Clean Concentrate Degreaser from Shield Technology to prepare parts for derusting. It removes oil grease and grime from all metal surfaces. If a stainless steel container is used, the solution may be heated and the cleaning action accelerated. Biodegradable formulation includes corrosion inhibitors to prevent subsequent rusting after cleaning Economical contents of the bottle makes up to 10 litres of degreasing fluid Note: It should not be used to clean aluminium alloys After cleaning part with Restore Pre-clean, remove rust with Restore Rust Remover . RESTORE products can be used by a diverse range of users, from restorers of all type of vehicles, boat builders, model engineers etc. They are water-based, non-acidic, non-toxic, biodegradable derusting concentrates, which only remove the rust and do not attack plastics, rubbers and non-ferrous metals (Products that contain phosphoric acid will remove rust and a certain amount of good metal). There is also no danger of flash rusting occurring when parts are removed from the bath (a powerful corrosion inhibitor is included in the formulation).