Brake Fluids
Brake fluids
Brake fluids are very important in the operation of the vehicle and essentially transfer the force from the brake pedal to the brakes on the wheels. These fluids are subject to high fluctuations in pressure and temperature (brake disk temperature is also transferred to brake fluid ) and have a very high boiling point that may exceed 260 o C.
To meet these requirements, brake fluids are highly specialized synthetic lubricants not compatible with any other type of lubricant brake or other brake fluid. Brake fluids are hygroscopic, that is, they have the (poor) property of absorbing moisture. Moisture
the brake fluid gradually enters the time from the container fan. These fluids are corrosive and their contact with paint should be avoided.
Moisture is not mixed with the brake fluid, but clings to a point on the circuit, usually at the depth of the auxiliary pump, where they create 'waterfalls'.
Most unpleasant is that the moisture, which is essentially water, has a boiling point of just 100 °C, a temperature that with the extended use of the brakes can easily reach the brake fluid. Moisture when overtaking the boiling point, it turns into steam (gas) and forms bubbles in the brake fluid. As we know, liquids are uncompressed (we can not reduce their volume, as much pressure as we can), but the gases are compressed very easily. Thus, after a certain point, the pressure exerted on the brake pedal is consumed in the compression of the bubbles, and the pressure on the brakes decreases.
Therefore, brake fluids should be replaced at regular intervals every 2-3 years.
T MEF & Brake Fluid Specifications
Essentially these are two types of brake fluid, one of which is made on the basis of silicone, and is not compatible with the other type of fluid. Silicone brake fluids meet DOT5.0 specifications .
The other type of brake fluid is the one that is conquered by synthetic lubricants and is very widespread. Originally the specifications were issued and have very limited use.
DOT3 (DOT: Department of Transport) and later the most upgraded DOT4. The difference between them is that DOT4 brake fluid has a higher boiling point and is less hygroscopic than the previous DOT3 fluids. DOT4 is fully compatible with DOT3 and can be used in place of DOT3 but NOT inverse.Manufacturers requesting DOT4 have taken note of the performance of DOT4 and the use of DOT3 is likely to affect the safe operation of the brakes.Finally, vehicles with ABS need to use the best possible DOT4 fluid quality (some call them Super DOT4) because these systems tend to overheat liquids.
Recently, new DOT5.1 fluid brake specifications have been published which liquids are NOT compatible with DOT5.0 silicone fluids but are compatible with DOT3 & DOT4.
CEPSA produces brake fluid with DOT4 specifications and is particularly suited for ABS systems. It is fully compatible with DOT4 brake fluids from other brake fluid manufacturers. It is also compatible with DOT3 and DOT5.1 brake fluids, but their mixing should be avoided under normal conditions (only in case of emergency).
Brake Fluids
Brake fluids
Brake fluids are very important in the operation of the vehicle and essentially transfer the force from the brake pedal to the brakes on the wheels. These fluids are subject to high fluctuations in pressure and temperature (brake disk temperature is also transferred to brake fluid ) and have a very high boiling point that may exceed 260 o C.
To meet these requirements, brake fluids are highly specialized synthetic lubricants not compatible with any other type of lubricant brake or other brake fluid. Brake fluids are hygroscopic, that is, they have the (poor) property of absorbing moisture. Moisture
the brake fluid gradually enters the time from the container fan. These fluids are corrosive and their contact with paint should be avoided.
Moisture is not mixed with the brake fluid, but clings to a point on the circuit, usually at the depth of the auxiliary pump, where they create 'waterfalls'.
Most unpleasant is that the moisture, which is essentially water, has a boiling point of just 100 °C, a temperature that with the extended use of the brakes can easily reach the brake fluid. Moisture when overtaking the boiling point, it turns into steam (gas) and forms bubbles in the brake fluid. As we know, liquids are uncompressed (we can not reduce their volume, as much pressure as we can), but the gases are compressed very easily. Thus, after a certain point, the pressure exerted on the brake pedal is consumed in the compression of the bubbles, and the pressure on the brakes decreases.
Therefore, brake fluids should be replaced at regular intervals every 2-3 years.
T MEF & Brake Fluid Specifications
Essentially these are two types of brake fluid, one of which is made on the basis of silicone, and is not compatible with the other type of fluid. Silicone brake fluids meet DOT5.0 specifications .
The other type of brake fluid is the one that is conquered by synthetic lubricants and is very widespread. Originally the specifications were issued and have very limited use.
DOT3 (DOT: Department of Transport) and later the most upgraded DOT4. The difference between them is that DOT4 brake fluid has a higher boiling point and is less hygroscopic than the previous DOT3 fluids. DOT4 is fully compatible with DOT3 and can be used in place of DOT3 but NOT inverse.Manufacturers requesting DOT4 have taken note of the performance of DOT4 and the use of DOT3 is likely to affect the safe operation of the brakes.Finally, vehicles with ABS need to use the best possible DOT4 fluid quality (some call them Super DOT4) because these systems tend to overheat liquids.
Recently, new DOT5.1 fluid brake specifications have been published which liquids are NOT compatible with DOT5.0 silicone fluids but are compatible with DOT3 & DOT4.
CEPSA produces brake fluid with DOT4 specifications and is particularly suited for ABS systems. It is fully compatible with DOT4 brake fluids from other brake fluid manufacturers. It is also compatible with DOT3 and DOT5.1 brake fluids, but their mixing should be avoided under normal conditions (only in case of emergency).