It is advisable to check the manual book of your vehicle or check the manufacturer’s recommendation. Also, please note that the power steering hydraulic oil shouldn’t be used as a reference for your hydraulic brake fluids as they have different chemical compositions especially when it comes to hydraulic brake fluids. \r100% synthetic brake fluid on the poly-glycol basis for all types of hydraulic actuated brake and clutch systems meeting DOT 4 and DOT 3 manufacturers’ recommendations.\rFor example DOT 3/ DOT4/ DOT 5.1 have very good thermal resistance and stability.\rBrake fluids have the property to absorb humidity in the air, which reduces their boiling points and consequently security. The wet boiling point is representative of the fluid after one year of use. Perfectly neutral with seals used in braking systems. Anti-corrosion.