RRODUCT INTRODUCTION
Brake fluid, also known as brake fluid, is the key medium for transferring pressure and realizing vehicle braking in a hydraulic braking system.
Its core role is to convert the driver's force on the brakes into hydraulic energy, pushing the brake pads and brake disc friction, so as to slow down or stop.
High-quality brake fluid needs to have high boiling point, low freezing point, corrosion resistance and stability to ensure safety performance under extreme working conditions.
Product specifications |
DOT3 |
DOT4 |
DOT5.1 |
PH |
7.5-9.5 |
7.0-9.0 |
7.0-9.0 |
Equilibrium reflux boiling point (°C) |
≥250 |
≥250 |
≥270 |
Wet equilibrium reflux boiling point (°C) |
≥150 |
≥162 |
≥185 |
-40°C kinematic viscosity (mm²/s) |
≤1300 |
≤1100 |
≤880 |
Water molecule content (%) |
<015 |
<015 |
<015 |
DOT3
Composition: based on alcohol ether, containing a small amount of borate ester.
Characteristics: Dry boiling point ≥250°C, wet boiling point ≥150°C, strong moisture absorption.
Applicable models: ordinary family cars, low load vehicles.
DOT4
Composition: Higher content of borate ester, better moisture resistance than DOT3.
Characteristics: Dry boiling point ≥250°C, wet boiling point ≥162°C, suitable for frequent braking scenarios.
Applicable models: Middle and high-end sedans, SUVs, mild performance vehicles.
DOT5
Composition: Silicone-based formula, completely non-absorbent.
Characteristics: Dry boiling point ≥260°C, but slightly higher compression, to be used with specific brake systems.
Application:specialty vehicles, classic vintage cars (not applicable to ABS systems).
DOT5.1
Composition: High purity borate, compatible with DOT3/DOT4 systems.
Characteristics: Dry boiling point ≥270°C, strong anti-air resistance, performance close to racing grade.
Applicable models: high-performance sports cars, modified cars, high-load commercial vehicles.
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