Product Description
High-Performance DOT 4 Glycol-Ether Brake Fluid. It provides a high dry and wet boiling point to resist vapour lock, controlled low-temperature fluidity for responsive braking, excellent corrosion protection for brake-system metals and compatibility with brake rubber components for safe, reliable braking performance.
Key Performance Features
| High dry boiling point
high dry ERBP resists vapour lock under hard, repeated braking. |
High wet boiling point
maintains a safe boiling point as the fluid absorbs moisture in service. |
| Low-temperature fluidity
controlled low-temperature viscosity for responsive cold braking and ABS/ESP. |
Corrosion protection
protects brake-system metals against rust and corrosion. |
| Rubber compatibility
compatible with standard brake cups, seals and hoses. |
Miscible with DOT 3/4/5.1
mixes with other glycol-ether brake fluids (not silicone DOT 5). |
Applications & Performance Level
| Applications | Hydraulic disc and drum brake and clutch systems specifying an FMVSS 116 DOT 4 brake fluid. |
| Specification | FMVSS 116 DOT 4 — US federal DOT 4 brake fluid standard. SAE J1704 — SAE DOT 4 brake fluid specification. ISO 4925 Class 4 — international DOT 4 brake fluid classification. High dry/wet boiling point — resists vapour lock in hard braking. ABS/ESP compatible — suitable for vehicles with ABS and stability control. |
| OEM Suitability | Hydraulic brake and clutch systems specifying FMVSS 116 / SAE J1704 / ISO 4925 Class 4 (DOT 4). Use only the grade specified by the vehicle manufacturer. |
| Important Notice | Brake fluid is hygroscopic: keep containers sealed and do not reuse. Do not mix with silicone (DOT 5) fluid. ”Suitable for” does not mean official approval. Follow the vehicle manufacturer’s specification. |
| Property | Test Method | Target Typical Value |
| Appearance / Color | Visual | Clear to amber |
| DOT Grade | FMVSS 116 | DOT 4 |
| Dry Equilibrium Boiling Point (ERBP) | ISO 4925 | ≥ 265°C |
| Wet Equilibrium Boiling Point | ISO 4925 | ≥ 175°C |
| Kinematic Viscosity @ -40°C | ISO 4925 | ≤ 1,500 mm²/s |
| Kinematic Viscosity @ 100°C | ISO 4925 | ≥ 1.5 mm²/s |
| pH Value | ISO 4925 | 7.0 – 11.5 |
| Corrosion Resistance | ISO 4925 | Pass |
| Rubber (SBR) Compatibility | ISO 4925 | Pass |
Note: The target values above are typical product values for reference only; final production data is subject to the official KATMOTO Technical Data Sheet (TDS) and laboratory test report.
