In the brake fluid with time lose its properties. If it is not replaced over time, the brakes may are unsuccessful with little warning
Typical brake fluids are exceedingly strong hygroscopic, which absorb moisture on the environment, even when there are inside the system. The more water inside liquid, it has a lower boiling point.
Meanwhile it is the most important parameter! Moisture harms During intense braking fluid gets hot rapidly. The new fluid DOT 4 (in most cases used in modern cars) features a melting point well over 230 ° C, it is enough the water content reaches the approx. 3. 5 percent. This value dropped in order to approx. 80 ° C.
If the fluid boils and within the system of gas pockets appear, then it stops transmit power on the brake pedal to the pistons within the terminals. The pedal will subsequently become soft, will "fall to the floor" as well as the braking efficiency drops in order to almost zero.
How to avoid that? At least once each and every two years and not less than 60 thousand. km fluid simply swapped out. Modern cars equipped together with systems EBS, ESP and systems regarding electronic brake force submitting are particularly sensitive in order to fluid quality. For the proper functioning of all the systems is not adequate, so that the liquid will never boil - it need to have a suitable viscosity (a lesser amount than conventional fluids) allowing rapid pressure changes within the system.
This example meets the prerequisites. Bosch brake fluid DOT 4 HP. Using a standard smooth for fractions of seconds can decrease the system - as opposed to appearances in emergency situations greatly! The new cars more difficult with regards to modern cars beyond the selection of the correct fluid is important to experience a proper procedure for the exchange and venting process.
In many cases, it is necessary to train on a scan tool through which you'll enforce, among others, opening the valves in the hydraulic system in the actual ABS / ESP. Without this in the rear of the system can easily remain used the older fluid, and in addition the device cannot be completely vented, which will result in lower efficiency in the brakes.
According to the expert - Without hardware you can't do this well
The new cars to change the brake fluid and bleed the device requires appropriate equipment. In our
website many of us always use pressure device that forces the revolutionary fluid and simultaneously pushes the old system.
This eliminates the chance that the system could be the remnants of the older brake fluid and that can't be vented carefully what happens when you'll find other methods. The quality of the fluid within the system can be looked at by examining its boiling point utilizing a special tool.
It should be recalled, however, that the fluid within the system are mixed together to a limited extent - it happens that will, although the agent contained in the reservoir has the proper parameters, it is the fluid within the lines and terminals longer requires replacement.
It's worth knowing
Brake fluid should be in keeping with the requirements of the maker of the car.
After opening the package fluid begins to soak up water from the oxygen. The measure, which eg. Stood for several years around the shelf in the garage within the opened package will not be suitable for use.
Fluid from the system really should not be poured back into it.