THE IMPORTANCE OF BRAKE FLUID MAINTENANCE FOR VEHICLE SAFETY

While many drivers or machinery owners assume brake pads are the primary cause of brake issues, lack of clean brake fluid and the build-up of contaminants are more often the culprit behind performance fade and potential failure. Brake fluid transfers the force from the brake pedal to the brake pads and discs, requiring high-quality formulation for reliable and responsive braking. Keeping brakes free of residue with proper cleaning also improves the braking performance and lifespan of the brake system.

Witham Group’s new Brake & Clutch cleaner is the latest product to be added to their range of reliable brake fluids. The cleaner is a highly effective cleaning solvent, formulated to remove oil, grease, excess brake fluid and other contaminants from brake components of automotive, and all types of agricultural and commercial vehicles. It has a fast drying, fast evaporation formula and ensures residue free surfaces, which in turns offer more efficient and safer braking and can help delay premature wear and tear.

How Brake Fluid Works and Why It Matters

Brake fluid, a hydraulic fluid, transmits pressure from the brake pedal to the brake callipers or wheel cylinders, activating the brakes. Its non-compressible nature provides a solid and consistent pedal feel. However, glycol-ether based brake fluids, the most common type, are hygroscopic, meaning they absorb moisture from the air.

This moisture absorption has two significant negative impacts:

• Corrosion: Water within the brake system can cause internal corrosion of steel components.
• Reduced Boiling Point: As brake fluid absorbs water, its boiling point decreases. If the fluid temperature exceeds 100°C (the boiling point of water), the water turns to steam, which is compressible. This can lead to a spongy brake pedal or, in severe cases, complete brake failure.

Understanding DOT Standards

Brake fluids are classified by the Department of Transportation (DOT) into categories like DOT3, DOT4, and DOT5.1. These classifications are based on the fluid’s dry (fresh) and wet (moisture-absorbed) boiling points. Most vehicles use DOT4 brake fluid, but drivers should always consult their vehicle’s handbook for the correct specification.

The Neglected Component

Despite its importance, brake fluid is often the most neglected component in a vehicle’s braking system. While MOT inspections check fluid levels and visual contamination, they don’t assess the fluid’s moisture content or boiling point.

 Regular Brake Fluid Changes are Crucial

Glycol-ether based brake fluid should typically be replaced every two years, as recommended by most manufacturers. Regular changes are essential to maintain braking performance, prevent corrosion, and ensure driver safety.

Witham Group’s Commitment to Quality

Witham Group’s range of brake fluids exceeds vehicle manufacturer standards, preventing corrosion of brake components and reducing oxidation. Designed for a wide range of vehicles and high-temperature applications, even under severe conditions, Witham Group’s brake fluids offer superior performance and reliability.

Witham Group have five products in the brake fluid range:

• NEW – Qualube Brake & Clutch Cleaner: A highly effective cleaning solvent, formulated to remove grease, oil, brake fluid and other contaminants from the vital braking components. It is a fast-drying cleaner, improving brake performance and extending the lifespan of brake systems. A clean brake system means safer, more responsive driving.
• Qualube Brake Fluid DOT 5.1: Qualube Brake Fluid DOT 5.1 is a glycol ether-based fluid formulated exclusively from virgin materials to exceed the requirements of the major internationally recognised hydraulic brake fluid standards: FMVSS No 116 DOT5.1, SAE J1704 and 1SO4925 Class 5.1
• Qualube Brake Fluid DOT 4:  A glycol ether-based fluid formulated exclusively from virgin materials to exceed the requirements of the major internationally recognised hydraulic brake fluid standards: FMVSS No 116 DOT 4, SAE J1704 and ISO4925 Class 4.
• Qualube Classic Brake Fluid DOT 4: Qualube Classic Brake Fluid DOT 4 is formulated with specific additives that prevent fluid oxidation, rust and the swelling of the piston seals used in many conventional brake systems. Widely used in many vintage and classic applications this fluid is backward compatible with the earlier DOT 3 specification.
• Qualube LHM Plus Fluid: Mineral-based hydraulic fluid for Citroen hydro-pneumatic and braking systems (green reservoirs). High viscosity index for excellent flow at extreme temperatures. Protects against pump wear, rust, and corrosion. Compatible with specific brake, power steering, and self-levelling suspension systems

For more information and to view the full break-fluid range, go to: www.withamgroup.co.uk/products/lubricants-oils-greases/brake-fluids