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Castrol React Performance Dot 4 Fully Synthetic Car Brake Fluid

Castrol React Performance Dot 4 (Formerly Response Super DOT 4) Synthetic Brake Fluid is a high boiling synthetic brake fluid which far exceeds the requirements of the SAE J1703, FMVSS 116 DOT 3 and 4, ISO 4925 and JIS K2233 specifications. Castrol React Performance Dot 4 (Formerly Response Super DOT 4) Synthetic Brake Fluid is designed for use in all brake systems particularly those which are exposed to extreme conditions. This product has been formulated from mixed polyalkylene glycol ethers and borate ester together with other high performance additives and inhibitors which give ultimate system protection against the effects of corrosion and high temperature vapour lock.

All conventional brake fluids deteriorate during use.

It is strongly recommended that Castrol React Performance Dot 4 (Formerly Response Super DOT 4) Synthetic Brake Fluid should be changed according to the vehicle manufacturers advice. In the absence of such advice, a 2 year change period is recommended.

General Details:

Chemical Properties Free of nitrite
Specification FMVSS 116 DOT 4
Specification ISO 4925
Specification JASO JIS K2233
Specification SAE J1703
Specification SAE J1704

Additonal Images:

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  • Its formulation is based on glycol ether and borate ester technology and as such has a high vapour lock point (measurement relating to high temperature performance under braking conditions).
  • For extreme conditions where ultimate braking response is required.
  • Because of the nature of this formulation, the vapour lock point can be sustained at a higher level than conventional glycol ether based fluids during the service life of the product.


  • SAE J1703, SAE J1704
  • FMVSS116 DOT4
  • ISO 4925 Class 4
  • JIS K2233 Class 4

Technical Information:

Technical Information
Brake Fluid
Brake Fluid



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