Castrol SRF Racing Brake Fluid is a high performance brake fluid of special value in competitive motorsport where extreme braking conditions are encountered. It has been especially formulated to maximise braking performance under arduous competitive conditions. In order to achieve the optimum benefits in such applications, patented silicon ester materials have been employed in a unique Castrol formulation. As a result of its unique properties and to maintain excellent vapour lock and corrosion protection, we strongly recommend that Castrol SRF be drained and refilled every eighteen months. Application: Castrol SRF is suitable for all disc and drum brake systems used in motorsport with the exception of those for which a mineral oil is prescribed. It complies with the requirements of the following specifications: US FMVSS 116 DOT 3 and DOT 4 SAE J1703 ISO 4925 Australian Standard 1960 Grade 3 For shipping - contact us.