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.