HIGHTEC DOT 4 is a fully synthetic brake fluid based on glycols, made for reliable everyday braking performance. Built-in oxidation and corrosion inhibitors keep the hydraulic system protected and the fluid stable in service. The larger workshop container makes it ideal for fleets and busy garages.

Purpose and specifications

Designed for the hydraulic brake and clutch systems of cars and light commercial vehicles that require a DOT 4 fluid. It meets FMVSS 116 DOT 3, FMVSS 116 DOT 4, SAE J 1703, SAE J 1704, ISO 4925 Class 4, JIS K2233 Class 3 and JIS K2233 Class 4.

• 5L container ideal for workshops and multiple brake fluid changes
• High boiling point that resists vapour lock during repeated braking
• Anti-corrosion and anti-oxidation additives protect cylinders, calipers and ABS hydraulics
• Fully mixable with other synthetic glycol brake fluids for simple servicing

When to use / change?

Choose it for routine brake servicing or wherever a DOT 4 fluid is specified. Because glycol fluid is hygroscopic, replace it roughly every 2 years regardless of distance covered to maintain a safe boiling point. It performs across the normal automotive operating range and stays stable under high brake temperatures. Unopened shelf life is approximately 5 years when kept sealed and dry.

Frequently asked questions

Why is this offered in a large container?
The workshop size suits professional use where several vehicles are bled and serviced regularly.

Can it top up an existing DOT 3 or DOT 4 system?
Yes, it is compatible with and mixable with other fully synthetic glycol fluids of the same or lower grade.

How do I know when to replace it?
Change it about every 2 years or when a moisture test shows the wet boiling point has dropped too far.

Suitable for: all passenger cars and light commercial vehicles with hydraulic DOT 3 or DOT 4 brake systems. Always verify the exact approval against your vehicle's owner manual before use.