What type of car brake fluid is best for your vehicle?

You have a lot to take care of as a car owner. Whether it be wheel alignment, tyre pressure, engine oil, fuel economy, or a host of other factors, Even though your car is built to provide the most comfort and accessibility possible, it occasionally needs to be replaced or repaired in order to run properly. The car brake fluid is still frequently disregarded, although individuals regularly fill up and replace the engine oil.

A vital component of the car that ensures safety and must always be in good working order is the brake system. The hydraulic fluid known as car brake fluid is used to halt the rotating wheel and stop the vehicle. In a nutshell, brake pressure drives brake fluid onto your brakes, which in turn presses brake pads against rotors or disc brakes. The pressure applied to the rotors, which are fastened to the wheel hubs, helps the car slow down. Since the fluid is the primary factor in creating pressure, your braking system wouldn’t function as effectively without appropriate brake fluid, and occasionally it would not even function at all. This leads us to our topic for today

How can you choose the best car brake fluid ?

As was previously mentioned, brake fluid is a crucial component of the brake system that aids in stopping your car when you need to. Every automobile owner wants to get their hands on the best fluid possible because of this. Before moving on to the different types of brake fluid, let’s first talk about the advantages of braking fluid.

Gains from Car Brake Fluid

faulty braking The calibre of your brake fluid affects how well your brake system functions. Even if you use the best car brake fluid as the manufacturer or auto repair shop recommends, your brakes are still likely to malfunction. Contrarily, unattended brake fluid can result in several safety problems and even braking failure.

  • Priority One: The brake fluid needs to be routinely replaced in addition to being kept full. Brake fluid that is worn out or old won’t work properly and may cause an accident.
  • Performance: If you race or like autocrossing, having decent brakes is almost as crucial as having a strong engine. Your stopping power and control of the car will depend on the quality of the brake fluid.

Car Brake Fluid Types

  • DOT 3

For car owners who reside on plains and are subject to typical driving conditions, DOT-3 brake fluid is ideal. With a wet boiling point of 140 degrees Celsius and a dry boiling point of 205 degrees Celsius, it is a polyglycol-based fluid. Over the course of a year, it is known to absorb moisture at a rate of around 2% of its volume.

  • DOT 3 

It is highly accessible, and it can be combined with DOT 4 and 5.1 braking fluids without producing a harmful end product. Wear gloves and keep brake fluid away from your automobile when handling it because it can scratch the paint.

  • DOT 4

With the exception of being used at higher altitudes, DOT 4 brake fluid is fairly comparable to DOT 3 brake fluid. These are similarly polyglycol-based and absorb liquids at a rate of 2% annually. The fact that it has a higher boiling point than DOT-3 brake fluid is the only distinction between the two. The difference between the wet and dry boiling points is 155 degrees Celsius and 230 degrees Celsius, respectively.

You will need to exercise caution and keep it away from the car’s paint, much like with DOT-3 fluid. The DOT 4 car brake fluid can be combined with DOT 3 and DOT 5.1.

  • DOT 5

DOT 5 should not be used on a daily basis. It was created especially for race cars and other vehicles that focus on performance. It features a silicone base with a synthetic blend, in contrast to the other two products mentioned. This indicates that its absorption rate is zero, which, if neglected, can result in brake line corrosion. The wet and dry boiling points of DOT-5 braking fluid are 180 and 260 degrees Celsius, respectively. It is not compatible with any other sort of brake system and was not intended for vehicles with antilock brakes.

  • DOT 5.1 

Like DOT 5, DOT 5.1 is designed for race cars and high-performance automobiles. The anti-lock brake system compatibility of this oil makes a difference nonetheless. The polyglycol-based braking fluid shares the rest of its properties with DOT 3 and 4. It can be used with either of the fluids and has an annual absorption rate of 2%. Its wet and dry boiling points are 180 and 260 degrees Celsius, respectively.

Read more: How Does The Car Brake System Work?

What should you check for in brake fluid, and why?

Simmering Point:

The boiling point of the braking fluid should be your first concern. It is possible that the brake fluid turns to vapour as the braking system produces high temperatures, which reduces braking effectiveness. The fluid’s newness can be determined by its dry boiling point. Because of water contamination, the boiling point of car brake fluid decreases as it is used for extended periods of time. The fluid that has been combined with the vapour is therefore referred to as having a moist boiling point.

Brake fluid should be resistant to corrosion in components such as ABS control valves, master cylinders, wheel cylinders, and callipers. Some car brake fluids contain different corrosion-fighting chemicals. For instance, silicone is less corrosive than liquids based on glycol ether.


The viscosity is another important factor to consider because it aids with temperature control. This will guarantee that the anti-lock braking, traction control, and stability control systems operate as intended. Compatible with either disc brakes or drum brakes, brake fluids are made for specific brake systems. Make sure you are aware of your brake system and purchase a brake system that is appropriate for your vehicle.

You can make an informed choice now that you are aware of all the aspects that might help you choose the best brake fluid for your automobile. Numerous brake fluids are offered by well-known manufacturers, including Castrol, Prestone, Mag 1, Motul, and others, to fit a variety of cars. Asking the auto mechanics will also get you pointed in the proper direction.


We have now reached the conclusion of this article. You can decide which brake fluid is ideal for your car by taking these things into consideration. I hope this was of some use. Any more questions are welcome in the comments section below.

Keep checking back for more insightful posts on the workings of cars, the most recent auto news, and much more!

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