Series 600 DOT 4 Racing Brake Fluid (BF4)

This Product is Currently Unavailable in Canada

AMSOIL now offers Series 600 DOT 4 Racing Brake Fluid. AMSOIL Brake Fluids provide superior high-temperature performance in auto/light truck, high-performance, racing and powersports applications.

DOT 3 Brake Fluid Also Available

PRODUCT DESCRIPTION

AMSOIL Series 500 DOT 3 High-Performance Synthetic Brake Fluid and AMSOIL Series 600 DOT 4 Synthetic Racing Brake Fluid use pure base stocks and robust additives to combat boil-off and the effects of water contamination more effectively than conventional brake fluids. AMSOIL Synthetic Brake Fluids deliver superior high-temperature performance in auto/light truck, high-performance, racing and powersports applications.

CONTAMINATION

Water contaminates the brake system by seeping through microscopic pores in flexible brake lines and seals and through the reservoir fill cap when opened. Once inside, it quickly works to corrode brake parts, lines and seals, leading to eventual system failure. AMSOIL Synthetic Brake Fluids keep water in suspension, slowing its corroding effects. Their superior formulation lubricates and protects intricate braking components despite the inevitable water absorption associated with braking systems, delivering longer-lasting performance compared to conventional fluids.

BOIL-OFF

The extreme pressure and high heat common to braking can push conventional brake fluid beyond its boiling point, causing it to vaporize, or “boil-off.” Even more problematic, water contamination can drop the boiling point of conventional fluid below safe standards, accelerating the rate at which it boils off. This leads to a spongy or unresponsive feeling in the brake pedal. In contrast, the unique chemistry behind AMSOIL Synthetic Brake Fluids push their boiling point temperatures well beyond Department of Transportation (DOT) standards even when contaminated with 3 percent water (see chart). They maintain a stable viscosity over a wide temperature range and flow easily at the highest pressures generated in today’s automotive brake systems to deliver consistent, safe braking. AMSOIL Series 600 DOT 4 Synthetic Racing Brake Fluid features a wet equilibrium reflux boiling point (Wet ERBP) nearly 100°F higher than the DOT minimum, making it the ideal choice for high-performance cars, motorcycles and vehicles used for towing.

*Dry equilibrium reflux boiling point (ERBP)–the boiling point of new, freshly opened brake fluid.

**Wet ERBP–the boiling point of brake fluid having absorbed 3 percent water. Only 3 percent water contamination is often sufficient to reduce a DOT 3 fluid’s boiling point below the DOT minimum.

COMPRESSIBILITY

When a fluid is non-compressible it means it won’t compress into a smaller volume when pressure is applied. In a brake system, fluid pressure is multiplied by the master cylinder and can reach more than 1,000 pounds per square inch (psi) in the lines. Like any other hydraulic fluid, brake fluid must be non-compressible at the expected pressures to transmit force from one end of the system to the other while simultaneously lubricating the pistons and rubber parts as they move through their bores. If the fluid were to compress, all braking power would be lost. AMSOIL Series 600 DOT 4 Racing Brake Fluid remains non-compressible, even at the highest pressures generated in automotive brake systems. AMSOIL Brake Fluid provides superior stopping ability under the most demanding conditions.

BRAKE FLUID MAINTENANCE

Brake fluids fail either because they boil or because they cease to provide adequate lubrication and corrosion protection. Both reasons for failure are the result of contamination, usually by water or petroleum products.

DOT 3 and DOT 4 polyglycol ether-based brake fluids are hygroscopic, which means they absorb water easily and hold it in suspension, similar to antifreeze. In most climates, moisture seeps into the brake system continuously through the various seals and microscopic pores of the flexible brake lines. This seepage can accelerate as a vehicle ages and there’s almost no limit to how much water the fluid can absorb. By the time brake fluid has been in the system for three years, it can easily reach its wet boiling point. Because this happens gradually, most drivers won’t discover the reduced braking ability until it’s too late.

Many owner’s manuals recommend changing brake fluid every 24 months to remove moisture. Approximately half of all cars and light trucks in the U.S. over 10 years old have never had the brake fluid changed. In addition, powersports applications such as motorcycles, ATVs and UTVs require routine brake fluid changes as well.