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This is the ultimate racing brake fluid!
(Dry 590/Wet 518)
Brake
Fluid Application Guide and Tips :
Due to the extreme operating temperatures of a
high performance brake system, standard 'off-the-shelf' brake fluids
are not recommended. Of critical importance in determining a
fluids ability to handle high temperature applications is the Dry
Boiling Point and compressibility.
The Dry Boiling
Point is the temperature at which a brake fluid will boil in its
virgin non-contaminated state. The highest temperature Dry Boiling
Point available in a DOT 3 fluid is 572 F
The Wet Boiling
Point is the temperature a brake fluid will boil after it has been
fully saturated with moisture. The DOT 3 requirement for wet boiling
point is a minimum temperature of 284 F.
There are many ways
for moisture to enter your brake system. Condensation from regular
use, washing the vehicle and humidity are the most common, with
little hope of prevention. Glycol based DOT 3 & 4 & 5.1
fluids are hygroscopic; they absorb brake system moisture, and over
time the boiling point is gradually reduced.
We do not
recommend using DOT 5 fluid in any racing applications. DOT 5 fluid is not hygroscopic, so as
moisture enters the system, it is not absorbed by the fluid, and
results in beads of moisture moving through the brake line,
collecting in the calipers
. It is not uncommon to have
caliper temperatures exceed 200 F, and at 212 F, this collected
moisture will boil causing vapor lock and system failure.
Additionally, DOT 5 fluid is highly compressible due to aeration and
foaming under normal braking conditions, providing a spongy brake
feel. DOT 5 fluid is best suited for show car applications where its
anti-corrosion and paint friendly characteristics are
important.
Whenever you add fresh fluid to your
existing system (never mix fluids of different DOT classifications), it immediately becomes contaminated,
lowering the boiling point of the new fluid.
For maximum
performance, start with the highest Dry Boiling Point available,
flush the system completely, and flush it regularly, especially
after severe temperatures have been experienced.
Brake
system capacities vary on differing vehicles. Typically 2
Pints (or approximately 1 Liter) should be sufficient to completely
flush the old fluid and replace with new. We recommend 4 Pints
or 2 Liters of Fluid to be certain that your system is completely
flushed of old fluid- and this also allows for some extra
fluid to spare.
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