ESI6 Extended Service Brake Fluid - 1qt (946ml)

A low viscosity fluid replacing DOT 3, 4, & 5.1 fluid with a 3-year extended change interval. Boiling point - Dry 270°C (518°F) / Wet 185°C (365°F)
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Availability: Inventory On Order, ETA Jul 8, 2021
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Product Details

Modern brake systems, such as those featuring ABS and ESP®, are designed for improved performance to safely stop vehicles. With improved performance comes a higher load on the braking systems. These systems require a brake fluid with a high wet boiling point, low viscosity, and high lubricity.

As a vehicle system developer and the first to market ABS and inventor of ESP®, Bosch understands the need for high-quality brake fluid.

Bosch ESI6 is a next-generation brake fluid. It exceeds all current DOT standard requirements (FMVSS 116).


  • First to simultaneously combine both low viscosity and high wet boiling point at its operation
  • Longer lasting: 100% longer than DOT 3, 50% longer than DOT 4, and 10% longer than DOT 5.1 (with 30% lower viscosity: -40 DegreeC ~670mm2/s)
  • ESI coverage includes the majority of all brake systems launched since 1990; Use with DOT 3, DOT 4, or DOT 5.1; Coverage excludes DOT 5 silicone-based brake fluid which is limited to military and racing applications
  • Excellent lubricity properties to prevent wear of components in the brake system and reduce noise

ESI6 contributes to the high performance and service life of modern brake systems with its high dynamic properties. For over two years, it has undergone sophisticated testing geared towards new versions of ABS and ESP® systems in our Bosch development center in Abstatt, Germany. ESI6 brake fluid has been subject to intense testing of both system pressure build-up and wear and noise at extreme temperatures. 

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi All All All
BMW All All All
Mercedes Benz All All All
MINI All All All
Porsche All All All
Volkswagen All All All
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


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Manufacturer names and/or part numbers are used only for identification purposes.

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