Motorex Brake Fluid - DOT 4 - Silver
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Motorex Brake Fluid Premium High-Performance DOT 4 250mlFree delivery in 1–3 days£14.99Visit shop →
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Product Information
Full details
Motorex DOT 4 Brake Fluid is an ideal maintenance solution for motorcycle, car, and commercial vehicle owners looking to ensure reliable hydraulic brake performance through a premium synthetic formula. Its key strength lies in its high wet boiling point, which provides an essential safety margin against vapour lock during demanding braking conditions. Users should note that while it is widely compatible with other synthetic fluids, it must never be mixed with mineral-based brake fluids, as doing so can compromise the entire braking system.
All features
| Colour | Silver |
|---|---|
| Model Part Number | MTX-300280 |
| Brand | MOTOREX |
Extended Product Information
FAQs
Can I mix this with DOT 5 fluid?
No. DOT 5 is silicone-based and must not be mixed with synthetic DOT 4 fluids.
What is the boiling point of this fluid?
The wet boiling point is 165 °C, providing excellent heat resistance.
How often should I change my brake fluid?
Most manufacturers recommend changing brake fluid every 1 to 2 years, or as specified in your vehicle's service manual.
Is this safe for ABS systems?
Yes, Motorex DOT 4 is designed to be compatible with modern hydraulic brake systems, including those equipped with ABS.
Does the colour indicate the fluid type?
The fluid is yellow; however, always rely on the bottle specifications (DOT 4) rather than the colour when identifying fluids.
Troubleshooting
Spongy brake pedal or lever feel
This often indicates air in the lines. Perform a thorough brake bleed procedure to remove trapped air bubbles.
Fluid accidentally mixed with mineral oil
The entire braking system must be drained, flushed, and cleaned immediately by a professional technician to prevent seal failure.
Pros and Cons
Pros
- High resistance to vapour lock
- Compatible with most synthetic DOT fluids
- Suitable for a wide variety of vehicle types
- Meets rigorous international safety standards
Cons
- Cannot be mixed with mineral-based oils
- Smaller 250ml container may require multiple units for full system flushes
- Fluid is hygroscopic and must be stored in a sealed container
Setup, Compatibility & Care
When replacing your brake fluid, ensure the reservoir is cleaned of debris before opening to prevent contamination. Use a clean, lint-free cloth to wipe the master cylinder area. Always consult your vehicle's service manual to confirm the required fluid specification. While this product is compatible with synthetic DOT 3, 4, and 5.1, it is strictly incompatible with mineral-based fluids. Always store the bottle in a cool, dry place with the cap tightly sealed to prevent moisture absorption from the air, which can lower the boiling point of the fluid prematurely.