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Brake better with good brake fluid


The brake fluid is used to transmit the force from the brake pedal to the wheel brakes. For this purpose, the brake booster converts the "foot force" into a hydraulic pressure and transmits it via the brake lines, in which the brake fluid is located. In the section below you will learn how the brake fluids differ and what to look for when changing the brake fluid as when buying brake fluid.

What are the types and requirements of brake fluid?
What should be observed when changing the brake fluid?
What to consider when buying brake fluid?

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BREMBO Bremsflüssigkeit L04010 DOT 4 Premium Brake Fluid 2 L 2 Liter

Item No.: PKT672W944
Manufacturer: BREMBO
part number: L04010
EAN-Code: 8020584536247
Delivery:

  • 2x Brake Fluid Piece - BREMBO L04010
14,50 EUR
7,25 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

ATE 03.9901-5802.2 705802 Bremsflüssigkeit SL DOT 4 - 1 L 1 Liter 1000 ml

Item No.: UNI405W873
Manufacturer: ATE
part number: 03.9901-5802.2
EAN-Code: 4006633490023
Qualitaet: SL DOT 4
Baugruppe: Chemische Produkte
Trockensiedepunkt_c: 230
Mapp_Code_Vorhanden:
Nasssiedepunkt_c: 155
Inhalt_liter: 1
Mengeneinheit: Stück
Gebindeart: Kanne
9,30 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

ATE 03.9901-5803.2 705803 Bremsflüssigkeit SL DOT 4 - 5 L 5 Liter 5000 ml

Item No.: UNI405W872
Manufacturer: ATE
part number: 03.9901-5803.2
EAN-Code: 4006633490030
Qualitaet: SL DOT 4
Baugruppe: Chemische Produkte
Trockensiedepunkt_c: 230
Mapp_Code_Vorhanden:
Nasssiedepunkt_c: 155
Inhalt_liter: 5
Mengeneinheit: Stück
Gebindeart: Kanne
19,95 EUR
3,99 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

3x 1L 1 Liter FERODO FBC100 Bremsflüssigkeit Kupplungsflüssigkeit DOT 3

Item No.: PKT872W333
Manufacturer: FERODO
part number: FBC100
EAN-Code: 5016687017793
Delivery:

  • 3x Brake Fluid Piece - FERODO FBC100
23,45 EUR
7,82 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

ATE Bremsflüssigkeit SL DOT 4 03.9901-5801.2 + 03.9901-5802.2 - 1,5L 1,5 Liter

Item No.: PKT862W297
Manufacturer: ATE
part number: 03.9901-5801.2, 03.9901-5802.2
Delivery:

  • 1x Brake Fluid Piece - ATE 03.9901-5801.2
  • 1x Brake Fluid Piece - ATE 03.9901-5802.2
14,00 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

BREMBO Bremsflüssigkeit L05010 DOT 5.1 Premium Brake Fluid 1 L 1 Liter

Item No.: UNI405W016
Manufacturer: BREMBO
part number: L05010
EAN-Code: 8020584536292
Baugruppe: Chemische Produkte
Trockensiedepunkt_c: 260
Nasssiedepunkt_c: 180
Guete_Klasse: DOT5.1
Inhalt_liter: 1
Mengeneinheit: Stück
Gebindeart: Flasche
11,45 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

FERODO Bremsflüssigkeit für ESP Systeme DOT 4 FBL100 - 1L 1 Liter

Item No.: UNI405W863
Manufacturer: FERODO
part number: FBL100
EAN-Code: 5016687017892
Baugruppe: Chemische Produkte
Brems_Fahrdynamik: für Fahrzeuge mit ESP
Nasssiedepunkt_c: 172
Inhalt_liter: 1
Mengeneinheit: Stück
Spezifikation: ESP DOT 4 Synthetic
Spezifikation_Nach_Dot: DOT 4
Trockensiedepunkt_c: 270
Guete_Klasse: DOT4 ESP
Viskositaetsklasse_Sae: 700
Gebindeart: Flasche
8,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

3x 1L 1 Liter FERODO FBL100 Bremsflüssigkeit für ESP Systeme DOT 4

Item No.: PKT872W329
Manufacturer: FERODO
part number: FBL100
EAN-Code: 5016687017892
Delivery:

  • 3x Brake Fluid Piece - FERODO FBL100
19,00 EUR
6,33 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

2x 1L 1 Liter FERODO FBL100 Bremsflüssigkeit für ESP Systeme DOT 4

Item No.: PKT872W328
Manufacturer: FERODO
part number: FBL100
EAN-Code: 5016687017892
Delivery:

  • 2x Brake Fluid Piece - FERODO FBL100
15,50 EUR
7,75 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

ATE 03.9901-5802.2 705802 Bremsflüssigkeit SL DOT 4 - 2 L 2 Liter 2000 ml

Item No.: PKT872W517
Manufacturer: ATE
part number: 03.9901-5802.2
EAN-Code: 4006633490023
Delivery:

  • 2x Brake Fluid Piece - ATE 03.9901-5802.2
15,30 EUR
7,65 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

FERODO Bremsflüssigkeit Kupplungsflüssigkeit DOT 5.1 FBZ500 - 5L 5 Liter

Item No.: UNI405W856
Manufacturer: FERODO
part number: FBZ500
EAN-Code: 5016687015997
Baugruppe: Chemische Produkte
Trockensiedepunkt_c: 269
Nasssiedepunkt_c: 183
Guete_Klasse: DOT5.1
Viskositaetsklasse_Sae: 850
Inhalt_liter: 5
Mengeneinheit: Stück
Gebindeart: Kanister
Spezifikation: DOT5.1 Synthetic
Spezifikation_Nach_Dot: DOT 5.1
47,95 EUR
9,59 EUR per 1 l

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

FERODO FBC100 Bremsflüssigkeit Kupplungsflüssigkeit DOT 3 / 1Liter

Item No.: UNI405W870
Manufacturer: FERODO
part number: FBC100
EAN-Code: 5016687017793
Baugruppe: Chemische Produkte
Trockensiedepunkt_c: 225
Nasssiedepunkt_c: 150
Guete_Klasse: DOT3
Viskositaetsklasse_Sae: 1350
Inhalt_liter: 1
Mengeneinheit: Stück
Gebindeart: Flasche
Spezifikation: DOT 3 Synthetic
Spezifikation_Nach_Dot: DOT 3
11,45 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart
of 5

What are the types and requirements of brake fluid?

For brake fluids, the boiling points and viscosity matter. Boiling point actually means the temperature at which the brake fluid starts to boil. The heat that is generated during braking is transferred to the brake lines. This can cause the brake fluid to heat up. If it starts to boil, this results in a sharp drop in braking performance, as the formation of vapor bubbles reduces the hydraulic pressure. A distinction is made between the dry and wet boiling points.

The dry boiling point refers to the brake fluid in its original state when it is very freshly filled into the brake lines. Over time, the brake fluid absorbs water via the brake lines and thus "dilutes" somewhat. This also lowers the boiling point, as water boils faster than the brake fluid. This is then referred to as the wet boiling point. The higher both values are, the better the brake fluid. The water content should be checked once a year, as the brake fluid should be replaced from a content of 3.5%.

The higher the value of the viscositiy, the more viscous the brake fluid. In vehicles with ESP systems, the value should be as low as possible, as these systems sometimes have tiny openings through which the fluid must flow. The thinner it is, the easier it is and the faster the brake system can react to the pressure changes.

Viscosity and boiling points have been divided into different types by the US Department of Transportation. These begin with DOT (=Department of Transportation) such as the brake fluid DOT 4 or DOT 5.1. The brake fluid is divided into the following types:

brake fluid DOT 3:

  • 205 C° dry
  • 140 C° wet
  • 1.500 viscosity in mm2/sec
  • Is generally only found in older vehicles

brake fluid DOT 4:

  • 230 C° dry
  • 155 C° wet
  • 1.800 Flow velocity
  • Can be found in most newer vehicles
  • For cars with ABS and ESP, there is an adapted version of the brake fluid DOT 4 with a lower viscosity. These are called DOT4 Plus, DOT4 Pro or DOT4 HP.

brake fluid DOT 5.1:

  • 260 C° dry
  • 180 C° wet
  • 900 flow velocity
  • This modified variant can combine with water, which means that the boiling point does not drop as much.
  • Therefore, the DOT 5.1 is well suited for extreme driving conditions such as in racing.

In addition to viscosity and boiling points, other requirements are placed on brake fluids besides temperature resistance. On the one hand, the fluid must not be affected by temperature fluctuations, and on the other hand, it must contain corrosion protection to delay wear of the components concerned.

What should be observed when changing the brake fluid?

In addition to an excessively high water content, small leaks, for example due to porous brake lines, can lead to a loss of brake fluid. In both cases, this has an impact on braking performance, which decreases as a result. For this reason, the ADAC recommends checking the brake fluid once a year and carrying out a complete brake fluid change every 2 years.This applies above all to vehicles that have been driven little in that time and older vehicles that are on the road with DOT 3. But also with newer vehicles a regular check of the water content and the filling level is necessary. Too much water in the brake fluid can promote the formation of rust, which should be avoided.

When changing brake fluid, it should be noted that air can get into the brake system, which must be removed again by bleeding before operation. In addition, brake fluid should be handled with care. It is not only toxic, but also corrosive, which is why it should not come into contact with the skin, paint or other components in the engine compartment. If it does happen, it is important to clean the areas immediately. The old brake fluid and the container should then be disposed of properly. Both are considered hazardous waste. If this is too tricky, it is best to have the brake fluid changed by a workshop.

What to consider when buying brake fluid?

When buying brake fluid depends on the correct type of fluid. Whether the brake fluid DOT 4, DOT 5.1 or another type is correct for your vehicle, you can find out in the owner's manual of your car. On some vehicles, the DOT specification is also indicated on the cap of the expansion tank. Basically, the types should not be mixed, as this changes the boiling points and viscosities.

In addition to the right types, high-quality brake fluids also contain the above-mentioned protective components against wear and corrosion. Therefore, it is recommended to rely on branded goods. Namable manufacturers of brake fluids that we carry are, for example:

With the brake fluids it is not necessary to buy the original goods of the vehicle manufacturers, because they do not produce the fluids themselves, but also fall back on brand manufacturers. The brake fluids offered by us also still convince with a favorable price.

In addition, when buying brake fluid is still to pay attention to the required amount. It is not advisable to stock up and buy more than fits into the brake system. As soon as the bottle or canister is opened, it draws water little by little, with which the brake fluid there already diluted and thus starts with worse conditions. You can also find the indication of the quantity in the manual of the vehicle.

If you are unsure which brake fluid to buy or there are any other questions about it, please feel free to contact our customer service with the vehicle details.