Purpose and Specifications

Comma DOT 5.1 Brake Fluid (1L) is a budget-friendly, high-performance glycol-based fluid that delivers reliable braking in demanding conditions. It resists boiling up to 260°C dry and 180°C wet, preventing brake fade during hard stops, towing, or track use. This fluid flows smoothly at -40°C for crisp ABS response in winter, protects against corrosion, and works safely with rubber seals in modern brake systems.

Key practical benefits include consistent pedal feel under heat, extended component life, and full compatibility with DOT 3 or DOT 4 fluids (never mix with silicone DOT 5). 1L bottle suits most full brake flushes.

When to Use / Replace?

Upgrade to DOT 5.1 for high-performance driving, heavy loads, or extreme temps where standard DOT 4 falls short. Replace every 2 years or 40,000 km (whichever first) as it absorbs moisture over time, lowering performance. Shelf life unopened: 5 years in cool, dry storage.

• Ideal for spirited road driving, mountains, or occasional track days.
• Flush if brakes feel spongy, pedal sinks, or during pad changes.
• Check fluid color: dark or cloudy means replace now.

FAQ

Can I mix Comma DOT 5.1 with DOT 4? Yes, fully compatible since both are glycol-based, but flush completely for peak performance.

Is DOT 5.1 better than DOT 4 for daily drivers? It offers higher heat resistance for safer stops in hot or wet conditions, perfect if you push your vehicle hard.

How much for a full brake flush? 1L typically covers cars; 0.5-1L for bikes. Bleed all lines starting from farthest wheel.