The absolute ultimate brake
fluid - perfect for any high operating temperature braking
system.
Castrol SRF is a very high
performance brake fluid specifically developed for motorsports
applications where extreme braking conditions are encountered.
Castrol SRF Brake Fluid's unique silicon ester technology absorbs
less water than conventional glycol ether fluids and prevents the
fluid's high temperature performance from deteriorating. Its wet
boiling point of 500°F is vastly superior to the minimum
requirement demanded by the current US DOT 4 specification. Its
ability to withstand temperatures in excess of 590°F and superior
resistance to the effects of absorbed water have established
Castrol SRF Brake Fluid as the world's premier fluid for the
hydraulic brakes used in all forms of motorsport and
racing.
Available in 1 liter size
Castrol service life is limited to 18 months
Take a few minutes to find out why Castrol SRF brake fluid really
is the ultimate:
Castrol SRF evolved as a direct
result of Castrol's ongoing Research and Development program for
brake fluids which identified this silicon ester technology as
providing considerable performance benefits when compared with
conventional glycol ether borate ester fluids.
Following exhaustive laboratory
tests at Castrol's International Technology Centre in the UK, the
final formulation for Castrol SRF was subjected to an extensive
road-test program on the Gross Glockner and Stelvio passes high in
the Austrian and Italian Alps. It then underwent an independent
track test program conducted by a famous Formula One racing team.
Their assessment was that "Castrol SRF is the best racing brake
fluid we have ever used."
Subsequently, Castrol SRF was
offered to top flight racing and rally teams throughout the world
including most of the Formula One teams, the all-conquering Jaguar
and Mercedes -Benz sports car teams and the Audi, Nissan and Toyota
rally teams. Enthusiastic recommendation by these experts soon
created an immense interest in Castrol SRF throughout the whole
spectrum of national and international motorsport. Today, Castrol
SRF is regarded by the international motorsport community as being
without equal and it is chosen not only by factory-supported teams
but by private competitors throughout the world.
All conventional brake fluids used
in cars and motor cycles are hygroscopic, that is, they absorb
water from their surroundings. Strange though it may seem, the
flexible hoses incorporated in braking systems are permeable to
water and in time enough, water can find its way into the system
via the hoses, and seriously affect the brake fluid's performance.
This water reduces the boiling point of the fluid (i.e., it lowers
the temperature at which gas bubbles begin to form). When these
bubbles form, they turn a virtually incompressible liquid into a
mixture of gas and liquid which can be compressed quite
considerably, thus severely reducing the efficiency of the brakes.
In this situation, a driver finds that the brakes feel spongy.
Brake-pedal travel will increase and it may be necessary to 'pump'
the pedal to get the brakes to function effectively. However, when
the brake fluid reaches a temperature at which the water in the
fluid causes gas to be produced, which is equal to the volume swept
by the piston in the rake master-cylinder, vapor-lock occurs and
the brakes become inoperative. When this happens, the first
indication the driver has that something is wrong is when he
applies the brakes. The pedal goes down to the floor and the car
carries on at undiminished - and possibly fatal speed.
The silicon ester technology in
Castrol SRF addresses this problem in two ways. Firstly, Castrol
SRF is less hygroscopic than conventional brake fluids - it absorbs
less water in a given time. Secondly, unlike conventional glycol
ether fluids, Castrol SRF reacts chemically with the absorbed water
to reduce its adverse effects, thus preventing the fluid's high
temperature performance and safety margins from deteriorating as
rapidly as they would otherwise do.
Castrol SRF exceeds the US Federal
Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JIS K2233 and
current SAE J1703 and is miscible with all conventional brake
fluids conforming to these standards. However, mixing Castrol SRF
and conventional brake fluids will reduce the benefits of Castrol
SRF. It is strongly recommended that conventional brake fluid be
drained from the system before flushing and refilling with Castrol
SRF.
