BRAKE FLUID DOT 5.1 EHV
EV/Hybrid optimized – Next-generation high-performance brake fluid
- Low Electrical Conductivity and Strong Corrosion Resistance
- High Dry Boiling Point (274℃) and Wet Boiling Point (184℃)
- Excellent Lubricity and Stable Viscosity
| Part Number/Price | BF510EH-01（bottle） BF510EH-10（10 bottles） |
|---|---|
| Volume | 1L |
| Meets the following specifications | FMVSS 116 DOT5.1 SAE J1704 ISO 4925 (CLASS7) |
| Main ingredient | Ethylene glycol derivatives |
※This product does not contain any tributylamine.
| DOT5.1 and DOT 5 are DIFFERENT!
Unlike a silicone-based DOT5, DOT5.1 is glycol based just like the conventional DOT3/DOT4. It means DOT5.1 does NOT absorb water quickly like DOT5 and does NOT require the total changeover of the brake lines or hoses, and can be used just like DOT3/DOT4. In addition, DOT5.1 has a higher boiling point and good Viscosity at low temperatures. |
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【Come with Fluid change reminders.】 Replace the whole amount every two years (1 to 1.5 liters).The date on the reminder sticker is just an indication. The oil change intervals may vary depending on the conditions under which the vehicles are used. Normally 1 liter of brake fluid is needed to replace the whole amount in the brake system. Please refer to the owner’s manual of the vehicle. |
Key Advantages of DOT 5.1 EHV
● Low Electrical Conductivity and Strong Corrosion Resistance
EVs and Hybrids rely heavily on regenerative braking, so hydraulic brakes are used less often and the brake fluid deteriorates more easily. Electrical charges around the braking system also increase the risk of corrosion.
To address these concerns, our DOT 5.1 EHV fluid offers lower electrical conductivity and stronger corrosion resistance than conventional products.
It shows up to about 10% lower conductivity than our standard DOT 5.1.
● High Dry Boiling Point (274℃) and Wet Boiling Point (184℃)
When the battery is fully charged, regenerative braking is inactive and hydraulic brakes must provide all stopping power.
Because EVs, PHEVs, and HVs are heavier due to battery packs, braking loads and temperatures are higher.
This product is engineered to deliver both a high dry boiling point and a high wet boiling point.
● Excellent Lubricity and Stable Viscosity
With advanced systems such as ABS, EBD, and ESC, the demands on brake cycle frequency and responsiveness have significantly increased.Our brake fluid provides excellent lubricity and stable viscosity across temperature ranges.
◆ Typical Properties
| DIXCEL DOT5.1EHV | FMVSS spec DOT5.1 | |
|---|---|---|
| Dry boiling point | 274℃ | over 260℃ |
| Wet boiling point | 184℃ | over 180℃ |
| Viscosity（-40℃） | 690cSt | under 750cSt |
| Viscosity（100℃） | 2.04cSt | over 1.5cSt |
| pH | 7.6 | over 7.0～11.5 |
Suitable area of use
| Area | Fluid | Suitable for |  Street （normal temp.） |
 Street （cold temp.） |
 Winding road |
 Race |
Pedal touch | Volume |
|---|---|---|---|---|---|---|---|---|
| Street | DOT5.1EHV | EV/Hybrid | ◎ | ◎ | ○ | ✕ | ★ | 1ℓ |
| DOT5.1 | Japanese cars / Domestic cars | ◎ | ○ | ○ | ✕ | ★ | 1ℓ | |
| DOT4LV | Cars with ABC and the latest ESP | ◎ | ◎ | △ | ✕ | ★ | 1ℓ | |
| DOT4 | General Japanese cars / K-cars | ◎ | △ | △ | ✕ | ★★ | 1ℓ | |
| Street/Circuit | 328 Racing | General street use/ Track day |
○ | △ | ◎ | ◎ | ★★★ | 0.5ℓ |
| Circuit | DUR | Track day/ Competition use |
✕ | ✕ | ◎ | ◎ | ★★★ | 0.5ℓ |