Description
Overview:
Opticare DOT4 Brake & Clutch Fluid is a premium specification hydraulic fluid formulated for safe, consistent performance in brake and clutch systems that specify DOT 4. Using a modern glycol‐ether base with performance additives, it helps maintain hydraulic pressure and pedal feel while resisting vapour lock during heavy or repeated braking. Supplied in a 500 ml bottle for easy handling and topping up, it is suitable for many passenger cars, light commercial vehicles, motorcycles, and selected machinery that require DOT 4 fluid. It supports efficient braking and smooth clutch actuation by transferring force reliably through the hydraulic circuit, helping to protect system components when used as directed. Identified by Manufacturer Part Number (MPN) 963 400 for straightforward reference during servicing.
Key Features:
- Premium DOT 4 formulation for consistent braking and clutch performance under everyday and demanding use.
- High boiling point to resist vapour lock and brake fade during heavy braking or towing.
- Maintains hydraulic pressure across a wide temperature range for stable pedal feel.
- Designed for systems that specify DOT 4, covering many cars, vans and motorcycles.
- Suitable for routine top‐ups and full system refills when bleeding or replacing components.
- 500 ml bottle for convenient storage, controlled pouring, and reduced waste.
- Helps support seal compatibility in DOT 4 systems and dependable long-term operation.
- MPN 963 400 for easy identification and workshop stock control.
- Not for systems requiring mineral oil or silicone‐based DOT 5; always check the vehicle handbook.
Typical Applications:
Use for topping up or replacing brake and clutch hydraulic fluid in vehicles and machinery that explicitly specify DOT 4. Ideal during caliper, cylinder, hose or master cylinder replacement, ABS service where DOT 4 is required, annual fluid changes, and moisture‐related maintenance. Suitable for many road cars, light commercial vehicles and motorcycles; may be used in selected equipment only where DOT 4 is stated by the manufacturer.
Also known as:
Brake oil, clutch oil, hydraulic brake fluid, DOT 4 hydraulic fluid, DOT4 brake liquid, DOT4 clutch fluid, brake and clutch hydraulic oil.
Product Specifications
| L&S Part No. | 963 400 |
|---|---|
| Unit of Sale | 1 |
| Key Features | - Premium DOT 4 formulation for reliable braking and clutch performance - High boiling point resists vapour lock during heavy braking - Suitable for many cars, vans, and motorcycles requiring DOT 4 - 500 ml bottle for easy handling and reduced waste - MPN 963 400 for straightforward identification and stock control |


