Why choosing the right brake fluid is crucial

Without brake fluid most car braking systems simply won't work. After all, it transmits the pedal pressure hydraulically to the brakes. But then not all brake fluids are the same. HELLA sets the highest quality standards in this regard and its products clearly surpass the statutory DOT requirements - both in terms of wet and dry boiling temperatures. This ensures that the braking performance remains stable even under heavy loads, such as on long downhill sections or in high outside temperatures.

Important: Brake fluid is not a consumable

Many drivers wrongly assume that you can simply top up low brake fluid in the same way as oil or wiper fluid. But this should definitely be left to the experts in the workshop. After all, they have the relevant knowledge and the necessary special tools.

And this is the golden rule: Regardless of the mileage, the brake fluid should be replaced every two years at the latest. If the braking effect diminishes or the brake pedal can be depressed easily without much resistance, drivers should go to the garage immediately and have their brake system and brake fluid checked.

Why you need to change the brake fluid in good time

Over time, brake fluid absorbs water from the environment – even in a closed system. Hygroscopicity is one of its chemical characteristics. The more water that accumulates in the liquid, the lower the boiling point becomes. In other words, the more water the faster the deterioration in braking performance. In extreme cases, vapour bubbles may form in high temperatures - and the brake pedal suddenly depresses into thin air.

Avoid costly brake failures: The right brake fluid makes all the difference

A missed change or the wrong fluid can cause long-term damage to seals, ABS modules or brake callipers. The result is high repair costs – which could have been avoided by choosing the right brake fluid. HELLA brake fluids are optimised for modern vehicle systems, are compatible with the materials used and offer maximum performance in all weather conditions. Safety starts with the details.

Not all brake fluids are the same

Modern brake systems place significantly higher demands on the brake fluid than was the case a few years ago. Vehicles with ABS, ESP or automated driver assistance systems require brake fluids that can not only withstand high temperatures, but also work reliably in cold conditions. This is why different DOT classes exist: DOT 3, DOT 4, DOT 5 or DOT 5.1 – each with specific properties in terms of boiling point, viscosity and chemical composition.

DOT 3: The original modern brake fluid. Used today in brake systems without complex safety components.

DOT 4: Common standard for most vehicles.

DOT 4 LV: Characterised by a particularly low viscosity. This is why it is recommended for all vehicles with modern safety systems such as ESP and ABS.

DOT 5.1: Fulfils the highest demands and guarantees additional safety, also with ABS and ESP.

The designation "DOT" originates from the US Department of Transportation, whose standards have become established worldwide. From the standpoint of workshop practice, this is crucial: Always refer to the manufacturer's specifications when selecting brake fluid! This is the only way to maintain constant braking power – even under extreme conditions.

Peace of mind with HELLA!

A vehicle's brake fluid must fulfil clearly defined manufacturer requirements and its composition must be perfectly matched to the special features of different brake systems. With HELLA brake fluids, car drivers and workshop professionals can be sure that precisely these requirements will be met and even greatly surpassed.