PRODUCT DESCRIPTION
AMSOIL Series 500 DOT 3 High-Performance Synthetic Brake Fluid
and AMSOIL Series 600 DOT 4 Synthetic Racing Brake Fluid feature
pure base stocks and robust additives that resist 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. They lubricate and protect intricate braking components despite
the inevitable water absorption associated with braking systems, delivering long-lasting
performance.
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 increase 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 high 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 ideal for high-performance
cars, motorcycles and vehicles used for towing.
| | DOT Minimum | AMSOIL |
DOT3
ERBP*: | 205°C (401°F) | 274°C (525°F) |
| Wet ERBP**: | 140°C (284°F) | 156°C (313°F) |
DOT4
ERBP*: | 230°C (446°F) | 304°C (580°F) |
| Wet ERBP**: | 155°C (311°F) | 193°C (380°F) |
*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.
Typical Technical Properties |
AMSOIL Series 500 DOT 3 High Performance Synthetic Brake Fluid and AMSOIL Series 600 DOT 4 Racing Synthetic Brake Fluid |
Equilibrium Reflux Boiling Point
Dry °C (°F)
Wet °C (°F) | 274 (525)
156 (313) | 304 (580)
193 (380) |
Viscosity
-40°C (-40°F), cSt
100°C (212°F), cSt | 1065
2.0 | 1550
2.0 |
| pH | 9.0 | 7.2 |
POWERSPORTS
The aggressive driving conditions and sudden stops common to
some on- and off-road motorcycle and ATV applications can
literally boil conventional brake fluid, leaving behind a discolored,
dirty solution that can promote deposit formation and corrosion
on braking components. Worn brake fluid also fails to
deliver adequate protection against water ingress common
to powersports equipment exposed to the elements.
The synthetic base stocks and superior
additives in AMSOIL Synthetic Brake Fluids
excel in demanding powersports applications,
providing reliable brake lever and pedal
response, corrosion protection and longevity as
compared to conventional brake fluids.
AMSOIL Synthetic Brake Fluids are the
product of choice for racing, heavy
hauling or leisure powersports
applications.
APPLICATIONS
Consult the AMSOIL Online
Product Applications Guide at
www.amsoil.com for application
information. For powersports
applications, consult the
owner’s manual to determine the
correct DOT classification.
