Castrol Rustilo 5905 (previously called Castrol Product 5905) is a neat corrosion preventive fluid, consisting of a blend of vegetable oil, alcohols and additives. Rustilo 5905 has been designed for use as an assembly fluid and has been specially formulated to give corrosion protection to brake and clutch hydraulic units whilst kept in storage.
Advantages- Residual film is compatible with brake fluid.
- Compatible with steel, grey cast iron, aluminium and copper.
- Compatible with elastomers, such as SBR and EPDM.
- Heavy metals free, (example Barium) which may help you to fulfil aspects of legislative requirements and waste treatment requirements that specify that these chemicals are excluded.