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Brake and clutch fluid: useful information

How to understand that it's time to change the brake fluid

To check the brake fluid efficiency, consult the service station specialists. They will measure its boiling point and the water percentage in its composition with the help of a special tester.

You may identify that you need to estimate the brake fluid quality by the following signs:

  • insufficient brake pedal resistance to pressing;
  • decreased braking efficiency;
  • car pulling to one side;
  • change of the fluid color.

Causes why the brake fluid prematurely loses its service properties

Brake fluid operates in high temperature conditions. At the moment of braking it heats up to an average of 200°C, but can sustain even higher values: from 205°C to 265°C. Since the fluid is hygroscopic, eventually the water percentage in its composition significantly increases, which causes it to boil much earlier than usual. This results in air inleakage and even a complete brakes breakdown. Increase in the water amount by only 2-3% lowers the boiling point by 30-50°C.

Premature loss of the fluid service properties may occur due to unsatisfactory brake lines condition. Rubber hoses have a porous structure. If the micropores size is increased, for instance, under the impact of direct sunlight, or when microcracks appear because of ingress of thawing chemicals, the hoses can no longer provide the proper tightness of the system.

The more water in the brake fluid, the higher is the risk of the unit components corrosion. Their wear products form deposits on the internal surfaces of the components, which can cause the pistons and cylinders to jam.

Often the necessity for the brake fluid early replacement occurs due to its non-compliance with the vehicle specifications or a driving style. In particular, products with a higher boiling point are used in sports cars, but the additives included in them can increase the aeration risk. These fluids are not suitable for vehicles equipped with the ABS system.

In some cases low braking efficiency is caused by the combined use of consumables different in composition. Their ingredients can react chemically, which not only results in deterioration of the fluid performance characteristics, but also leads to destruction of the system sealing and connecting components.

Replacement of brake fluid

The brake fluid replacement in vehicles equipped with integral ABS is best to be entrusted to specialists. In other cases you can fill the brake system on your own. At the same time, it is very significant not to confuse the order of bleeding the mechanisms which is specified in the car technical documents. Adhere to the following procedure:

  1. Mount the vehicle on a lift, a pit or a ramp. You can use a jack to unload the required sides of the vehicle one after another.
  2. Dismantle the wheels.
  3. Remove dirt from the surfaces of the wheel cylinder bleeding valves.
  4. Unscrew the expansion tank cap and fill it to the maximum level.
  5. Connect the transparent hose to the valve connector, and immerse its second end into a container partially filled with brake fluid.
  6. Ask your assistant to press the brake pedal a few times and hold it in this position, and unscrew the bleed valve at the same time.
  7. Check the tank for fluid level: the amount of fluid should not be lower the minimum mark.
  8. Repeat the procedure a few times until a clean fluid without bubbles flows out from the hose.
  9. Disconnect the hose, wipe the valve dry and install a protective cap on it.
  10. Repeat the procedure with all brake mechanisms.

Brake Fluid: High quality bestseller

FEBI BILSTEIN 23930 replacement Parts Details
  • Specification: DOT 4 Plus
  • Content [litre]: 1
  • DOT specification: DOT 4
  • Weight [kg]: 1,139
  • Observe service information
  • Required quantity: 1
  • Condition: New
In stock
Details
-22%
Brake Fluid 23930 - £ 8,55 Brake Fluid FEBI BILSTEIN 23930
Article №: 23930
£ 8,55
£ 10,96**
(£ 8,55 for 1 litre)
incl. 20% VAT, excl. delivery costs
CASTROL 15036B replacement Parts Details
  • Specification: JASO JIS K2234
  • Content [litre]: 1
  • DOT specification: DOT 4
  • Packing Type: Tin
  • Recommendations: ASTM D3306(I), ASTMD4985, ASTMD6210, BS6580:2010, Ford WSS-M97B44-D, MAN 324 Typ SNF, MB 325.3, VW-TL-774F (G12+)
  • Condition: New
In stock
Details
-22%
Brake and clutch fluid 15036B - £ 16,16 Brake Fluid CASTROL 15036B
Article №: 15036B
£ 16,16
£ 20,72**
(£ 16,16 for 1 litre)
incl. 20% VAT, excl. delivery costs
FEBI BILSTEIN 26461 replacement Parts Details
  • Specification: DOT 4
  • Content [litre]: 1
  • DOT specification: DOT 4
  • Weight [kg]: 1,139
  • Observe service information
  • Required quantity: 1
  • Condition: New
In stock
Details
-22%
Brake oil 26461 - £ 9,55 Brake Fluid FEBI BILSTEIN 26461
Article №: 26461
£ 9,55
£ 12,24**
(£ 9,55 for 1 litre)
incl. 20% VAT, excl. delivery costs
MOTUL 101666 replacement Parts Details
  • Content [litre]: 0,5
  • Oil: Full Synthetic Oil
  • Recommendations: FMVSS 116 DOT 4, SAE J1703
  • Observe service information
  • DOT specification: DOT 4
  • Condition: New
In stock
Details
-22%
Clutch fluid 101666 - £ 15,97 Brake Fluid MOTUL 101666
Article №: 101666
£ 15,97
£ 20,48**
(£ 31,94 for 1 litre)
incl. 20% VAT, excl. delivery costs
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MOTUL 102718 replacement Parts Details
  • Content [litre]: 0,5
  • Oil: Full Synthetic Oil
  • Recommendations: FMVSS 116, DOT 4, DOT 3, SAE J 1703, ISO 4925 (3 et 4)
  • Observe service information
  • DOT specification: DOT 3, DOT 4
  • Condition: New
In stock
Details
-22%
Clutch and brake fluid 102718 - £ 7,77 Brake Fluid MOTUL 102718
Article №: 102718
£ 7,77
£ 9,96**
(£ 15,54 for 1 litre)
incl. 20% VAT, excl. delivery costs
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VALEO 402406 replacement Parts Details
  • Specification: DOT4+
  • Chemical Properties: Synthetic
  • Content [litre]: 1
  • Dry Boiling Point [°C]: 265
  • Packing Type: Bottle
  • Weight [kg]: 1,15
  • DOT specification: DOT 4
  • Condition: New
In stock
Details
-22%
Brake fluid clutch 402406 - £ 11,48 Brake Fluid VALEO 402406
Article №: 402406
£ 11,48
£ 14,72**
(£ 11,48 for 1 litre)
incl. 20% VAT, excl. delivery costs
VALEO 402407 replacement Parts Details
  • Specification: DOT5.1
  • Chemical Properties: Synthetic
  • Content [litre]: 0,5
  • Dry Boiling Point [°C]: 265
  • Packing Type: Bottle
  • Weight [kg]: 0,6
  • DOT specification: DOT 5.1
  • Condition: New
In stock
Details
-22%
Brake Fluid 402407 - £ 6,21 Brake Fluid VALEO 402407
Article №: 402407
£ 6,21
£ 7,96**
(£ 12,42 for 1 litre)
incl. 20% VAT, excl. delivery costs
MOTUL 100950 replacement Parts Details
  • Content [litre]: 0,5
  • Oil: Full Synthetic Oil
  • Recommendations: FMVSS 116, DOT 5.1, DOT 4, DOT 3, SAE J 1703, ISO 4925(5.1, 4, 3)
  • Observe service information
  • DOT specification: DOT 5.1
  • Condition: New
In stock
Details
-22%
Brake and clutch fluid 100950 - £ 8,17 Brake Fluid MOTUL 100950
Article №: 100950
£ 8,17
£ 10,48**
(£ 16,34 for 1 litre)
incl. 20% VAT, excl. delivery costs
More
ATE 03.9901-6402.2 replacement Parts Details
  • Quality: SL.6 DOT 4
  • Content [litre]: 1
  • DOT specification: DOT 4
  • Packing Type: Can
  • MAPP code available
  • Condition: New
In stock
Details
-22%
Brake oil 03.9901-6402.2 - £ 11,48 Brake Fluid ATE 03.9901-6402.2
Article №: 03.9901-6402.2
£ 11,48
£ 14,72**
(£ 11,48 for 1 litre)
incl. 20% VAT, excl. delivery costs
More
BREMBO L 05 005 replacement Parts Details
  • Product line: DOT 5.1 Premium Brake Fluid
  • Quality: DOT 5.1
  • Content [litre]: 0,5
  • DOT specification: DOT 5.1
  • for article number: L 05 005
  • Packing Type: Bottle
  • Dry Boiling Point [°C]: 260
  • Wet Boiling Point [°C]: 180
  • Condition: New
In stock
Details
-22%
Clutch fluid L 05 005 - £ 5,65 Brake Fluid BREMBO L05005
Article №: L 05 005
£ 5,65
£ 7,24**
(£ 11,30 for 1 litre)
incl. 20% VAT, excl. delivery costs
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FERODO FBZ100 replacement Parts Details
  • Content [litre]: 1
  • Packing Type: Barrel
  • Oil Viscosity Classification SAE: 850
  • Specification: DOT5.1 Synthetic
  • Dry Boiling Point [°C]: 271
  • Wet Boiling Point [°C]: 183
  • DOT specification: DOT 5.1
  • Condition: New
In stock
Details
-22%
Clutch and brake fluid FBZ100 - £ 11,11 Brake Fluid FERODO FBZ100
Article №: FBZ100
£ 11,11
£ 14,24**
(£ 11,11 for 1 litre)
incl. 20% VAT, excl. delivery costs
FERODO FBX500 replacement Parts Details
  • Content [litre]: 5
  • Packing Type: Bottle
  • Oil Viscosity Classification SAE: 1350
  • Specification: DOT4 Synthetic
  • Dry Boiling Point [°C]: 240
  • Wet Boiling Point [°C]: 159
  • DOT specification: DOT 4
  • Condition: New
In stock
Details
-22%
Brake fluid clutch FBX500 - £ 25,93 Brake Fluid FERODO FBX500
Article №: FBX500
£ 25,93
£ 33,24**
(£ 5,19 for 1 litre)
incl. 20% VAT, excl. delivery costs
BREMBO L 04 210 replacement Parts Details
  • Product line: DOT 4 Low Viscosity Premium Brake Fluid
  • Quality: DOT 4 Low Fan clutch
  • Content [litre]: 1
  • DOT specification: DOT 4
  • for article number: L 04 210
  • Packing Type: Bottle
  • Dry Boiling Point [°C]: 260
  • Wet Boiling Point [°C]: 170
  • Condition: New
In stock
Details
-22%
Brake Fluid L 04 210 - £ 9,73 Brake Fluid BREMBO L04210
Article №: L 04 210
£ 9,73
£ 12,48**
(£ 9,73 for 1 litre)
incl. 20% VAT, excl. delivery costs
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FERODO FBZ050 replacement Parts Details
  • Content [litre]: 0,5
  • Packing Type: Barrel
  • Oil Viscosity Classification SAE: 850
  • Specification: DOT5.1 Synthetic
  • Dry Boiling Point [°C]: 271
  • Wet Boiling Point [°C]: 183
  • DOT specification: DOT 5.1
  • Condition: New
In stock
Details
-22%
Brake and clutch fluid FBZ050 - £ 6,80 Brake Fluid FERODO FBZ050
Article №: FBZ050
£ 6,80
£ 8,72**
(£ 13,60 for 1 litre)
incl. 20% VAT, excl. delivery costs
FERODO FBM100 replacement Parts Details
  • Content [litre]: 1
  • Packing Type: Bottle
  • Oil Viscosity Classification SAE: 1100
  • Specification: LHM plus Mineral
  • Dry Boiling Point [°C]: 250
  • DIN / ISO: ISO 7308
  • Packaging length [cm]: 21
  • Packaging width [cm]: 39,1
  • Packaging height [cm]: 25,3
  • Condition: New
In stock
Details
-22%
Brake oil FBM100 - £ 8,77 Brake Fluid FERODO FBM100
Article №: FBM100
£ 8,77
£ 11,24**
(£ 8,77 for 1 litre)
incl. 20% VAT, excl. delivery costs
FERODO FBX050 replacement Parts Details
  • Content [litre]: 0,5
  • Packing Type: Bottle
  • Oil Viscosity Classification SAE: 1350
  • Specification: DOT4 Synthetic
  • Dry Boiling Point [°C]: 240
  • Wet Boiling Point [°C]: 159
  • DOT specification: DOT 4
  • Condition: New
In stock
Details
-22%
Clutch fluid FBX050 - £ 4,27 Brake Fluid FERODO FBX050
Article №: FBX050
£ 4,27
£ 5,48**
(£ 8,54 for 1 litre)
incl. 20% VAT, excl. delivery costs
BOSCH 1 987 479 107 replacement Parts Details
  • Content [litre]: 1
  • DOT specification: DOT 4
  • Packing Type: Bottle
  • Dry Boiling Point [°C]: 230
  • Wet Boiling Point [°C]: 155
  • : 1500
  • Colour: Yellow
  • Condition: New
In stock
Details
-22%
Clutch and brake fluid 1 987 479 107 - £ 9,55 Brake Fluid BOSCH 1987479107
Article №: 1 987 479 107
£ 9,55
£ 12,24**
(£ 9,55 for 1 litre)
incl. 20% VAT, excl. delivery costs
More
FERODO FBL100 replacement Parts Details
  • Content [litre]: 1
  • Braking / Drive Dynamics: for vehicles with ABS, for vehicles with ESP
  • Packing Type: Bottle
  • Oil Viscosity Classification SAE: 700
  • Specification: ESP DOT 4 Synthetic
  • Dry Boiling Point [°C]: 265
  • Wet Boiling Point [°C]: 172
  • DOT specification: DOT 4
  • Condition: New
In stock
Details
-22%
Brake fluid clutch FBL100 - £ 10,11 Brake Fluid FERODO FBL100
Article №: FBL100
£ 10,11
£ 12,96**
(£ 10,11 for 1 litre)
incl. 20% VAT, excl. delivery costs
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