Amsoil Brake Fluid
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Series 500 High-Performance DOT 3 Brake Fluid
(BF3)
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.

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Series 600 DOT 4 Racing Brake Fluid (BF4)
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.
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.

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