Carlube DOT 4 Brake & Clutch Fluid - 1L x 2
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Product Information
Full details
Carlube DOT 4 Brake & Clutch Fluid is an essential maintenance solution for automotive, commercial, and motorcycle owners seeking to ensure reliable braking performance through a synthetic, high-boiling-point formula. It is specifically designed to resist moisture absorption and prevent vapor lock, making it ideal for standard hydraulic disc and drum brake systems; however, users must strictly avoid using this product in systems requiring mineral oil-based fluids, as this will lead to seal degradation.
All features
| Model Part Number | BFL100 |
|---|---|
| Brand | Carlube |
Extended Product Information
FAQs
Can I mix this with DOT 3 fluid?
Yes, DOT 4 is generally compatible with DOT 3, but you should always check your manufacturer guidelines first.
Is this safe for classic cars?
Only if the classic car's braking system is designed for glycol-based fluids. It is NOT safe for systems using mineral oil.
How often should I change my brake fluid?
Most manufacturers recommend a complete flush every 2 years or 24,000 miles, whichever comes first.
Why is the fluid hygroscopic?
It is designed to absorb moisture so that water does not pool in the system and cause localized corrosion or ice crystals.
What happens if I use this in a mineral oil system?
Using this fluid in a mineral oil system will cause the seals to swell and fail, leading to total loss of braking pressure.
Troubleshooting
Spongy or soft brake pedal feel
This is often due to air in the lines or old, moisture-contaminated fluid. Perform a full system bleed with new fluid.
Brake fluid spilled on paintwork
Immediately flush the affected area with large amounts of water and wipe dry. Do not let the fluid sit on the finish.
Unsure if vehicle requires DOT 4
Check the markings on your brake fluid reservoir cap or consult your specific vehicle service handbook.
Pros and Cons
Pros
- High boiling point prevents brake fade
- Excellent protection against internal corrosion
- Compatible with a wide range of automotive and motorcycle systems
- Meets major international safety standards
- Moisture-resistant formula for extended service intervals
Cons
- Not compatible with mineral oil-based brake systems
- Can cause significant damage to vehicle paintwork
- Requires careful handling to avoid skin contact
- Limited shelf life once the seal is broken due to hygroscopic nature
Setup, Compatibility & Care
Before adding fluid, always consult your vehicle's owner manual to confirm that the manufacturer specifies DOT 4 requirements. Avoid mixing this fluid with DOT 5 (silicone-based) fluids, as this can result in total brake failure.
Critical Care Tips:
- Paint Safety: Brake fluid is highly corrosive to automotive paint. If a spill occurs, immediately flush the area with copious amounts of water.
- Storage: Keep the container tightly sealed when not in use. Since DOT 4 fluid is hygroscopic (absorbs moisture from the air), leaving the cap off reduces the boiling point and compromises safety.
- Application: Always ensure the brake reservoir is clean before removing the cap to prevent debris from entering the hydraulic system.