Castrol Response DOT 4 is a high performance, synthetic brake fluid which exceeds the requirements of the SAE J1703, FMVSS116 DOT 3 and DOT 4, ISO 4925 and JIS K2233 specifications.
Castrol Response DOT 4 Brake Fluid is formulated from mixed polyalkylene glycol ethers together with carefully selected additives.
These enable the fluid to operate at a high performance level throughout its service life, offering system protection together with ultimate braking confidence.
It is strongly recommended that Castrol Response DOT 4, should be changed according to the vehicle manufacturers advice. In the absence of such advice, a 2 year change period is recommended.