Castrol SRF exceeds the US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JIS K2233 and current SAE J1703 and is miscible with all conventional brake fluids conforming to these standards. However, mixing Castrol SRF and conventional brake fluids will reduce the benefits of Castrol SRF. It is strongly recommended that conventional brake fluid be drained from the system before flushing and re-filling with Castrol SRF.

The wet boiling point of Castrol SRF, 270°C, is vastly superior to the minimum requirement of 155°C demanded by the current US DOT 4 specification. The product's typical dry boiling point of 310°C is likewise outstanding. This ability to withstand temperatures in excess of 300°C, and its superior resistance to the effects of absorbed water, have established Castrol SRF as the world's premier fluid for the hydraulic brakes used in all forms of motorsport.

DOT 4 motor vehicle brake fluid suitable for use in all disc and drum brake systems.

Small bottle 1 lt.