Amsoil Brake Fluid

AMSOIL now offers Series 500 High-Performance DOT 3 Brake Fluid. AMSOIL Brake Fluids provide superior high-temperature performance in auto/light truck, high-performance, racing and powersports applications.

Boiling Points
As the brake system heats up, brake fluids with low boiling points begin to vaporize. The brake pedal must travel further to apply the same amount of force on the brakes, causing a spongy feeling. If enough of the brake fluid vaporizes, brake system failure may occur. Brake fluid boiling points are measured on two separate scales:

• Dry equilibrium reflux boiling point (ERBP) - the boiling point of new, freshly-opened, unused fluid.
• Wet ERBP - the boiling point of a brake fluid after it has absorbed three percent water.

Boiling Points
As the brake system heats up, brake fluids with low boiling points begin to vaporize. The brake pedal must travel further to apply the same amount of force on the brakes, causing a spongy feeling. If enough of the brake fluid vaporizes, brake system failure may occur. Brake fluid boiling points are measured on two separate scales:

• Dry equilibrium reflux boiling point (ERBP) - the boiling point of new, freshly-opened, unused fluid.
• Wet ERBP - the boiling point of a brake fluid after it has absorbed three percent water.

The minimum dry ERBP for DOT 4 brake fluid is 230°C (446°F), while the minimum wet ERBP is 155°C (311°F). Their higher boiling points make DOT 4 fluids appropriate for high-performance cars and motorcycles and for vehicles used for towing or in mountainous regions.