More Information for BOSCH ESI6
{Alternate Inventory Numbers: ESI6-32N}
Continue Shopping
Part image
Direct Replacement for DOT 3, DOT 4, and DOT 5.1; Quart
ESI6 is the next generation brake fluid designed for today's modern braking systems. Designed by the industry's leader in braking technology for vehicles using DOT 3, DOT 4, and DOT 5.1 brake fluid.

Features & Benefits:
  • High compatibility. Use with or direct replacement for DOT 3, DOT 4, and DOT 5.1 brake fluid
  • Extended Service Interval (ESI): Lasts 100% longer than DOT 3, 50% longer than DOT 4, and 10% longer than DOT 5.1
  • Exceeds all DOT 3, DOT 4, and DOT 5.1 standards
  • Wet boiling point ~ 365F / Viscosity at -40 C ~ 670mm2/s
Additional Features of Bosch ESI6 Brake Fluid

Brake Fluid Comparison Chart

Fluid Type Compatible With Quality Chemical Composition Minimum Dry Boiling Point Minimum Wet Boiling Point
DOT 3 Brake Systems Good Glycol Ether 401F 284F
DOT 3 & DOT 4 Brake Systems Better Glycol Ether, Borate Ester 446F 311F
DOT 5.1
DOT 3, DOT 4 & DOT 5.1 Brake Systems Best Glycol Ether, Borate Ester 518F 374F
DOT 5 Brake Systems ONLY Specialty Silicone 500F 356F

How do I know if my brake fluid needs to be changed?

Brake fluid absorbs moisture. Water in brake fluid can boil during repeated or extended braking, creating air bubbles which reduce braking effectiveness. Water also can corrode metal brake lines. Change your brake fluid when:
  • A Brake Fluid Tester shows excess moisture
  • Fluid is dirty or rust-colored (it should be clear or translucent)
  • Brake pedal feels mushy or requires a lot of pressure (possible air bubbles)
  • You've reached the miles or years your owner's manual recommends for fluid changes
Not returnable once opened.

The Different Types of Brake Fluid

Additional Resources

Material Safety Data Sheet (MSDS)

Attention California Customers - WARNING: This product can expose you to chemicals including Ethylene Oxide, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

Warranty Information:
No Warranty
Warranty Details