Brake fluid BMW X3 G01 (2017–2023) — DOT 4 Plus specification
Brake fluid for BMW X3 G01 (2017–2023) — required specification, boiling points, system volume, and approved brands.
Caractéristiques techniques
| Parameter | Value |
|---|---|
| Marque / Modèle | BMW X3 G01 |
| Années de production | 2017–2023 |
| Spécification du liquide | DOT 4 Plus |
| Point d’ébullition sec | 260°C |
| Point d’ébullition humide | 165°C |
| Volume du système | 600 ml |
| Intervalle de remplacement | 60 000 km / ans |
Marques approuvées
BMW Brake Fluid DOT 4 Plus / ATE SL DOT 4 Plus / Castrol DOT 4 LLT
Why Brake Fluid Must Be Changed Regularly
Brake fluid is hygroscopic — it absorbs moisture from the air over time. As moisture content increases, the boiling point drops significantly. When the fluid boils under heavy braking, vapour bubbles form and the pedal goes to the floor (vapour lock). BMW requires DOT 4 Plus with a dry boiling point of at least 260°C.
How to Check Brake Fluid Condition
- Test strips — dip a strip in the reservoir; colour indicates moisture content
- Electronic tester — measures boiling point directly (most accurate)
- Visual inspection — dark/brown fluid indicates it must be replaced (fresh fluid is amber/clear)
Questions fréquentes
What brake fluid does BMW X3 G01 use?
DOT 4 Plus specification. Point d’ébullition sec: 260°C. Volume du système: 600 ml. Marques approuvées: BMW Brake Fluid DOT 4 Plus / ATE SL DOT 4 Plus / Castrol DOT 4 LLT.
How often should I change brake fluid in BMW X3 G01?
Every 60 000 km or every ans — whichever comes first. This is a safety-critical service.
Can I mix different DOT grades?
You can mix DOT 3 and DOT 4 in an emergency, but never mix DOT 5 (silicone-based) with DOT 3/4 (glycol-based). Always use the correct specification: DOT 4 Plus.
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