Brake fluid Mazda CX-5 KF (2017–2023) — DOT3/4 specification
Brake fluid for Mazda CX-5 KF (2017–2023) — required specification, boiling points, system volume, and approved brands.
Caractéristiques techniques
| Parameter | Value |
|---|---|
| Marque / Modèle | Mazda CX-5 KF |
| Années de production | 2017–2023 |
| Spécification du liquide | DOT3/4 |
| Point d’ébullition sec | 205°C |
| Point d’ébullition humide | 140°C |
| Volume du système | 500 ml |
| Intervalle de remplacement | 40 000 km / ans |
Marques approuvées
Mazda Genuine, Motul DOT4, Castrol React DOT3
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). Mazda requires DOT3/4 with a dry boiling point of at least 205°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 Mazda CX-5 KF use?
DOT3/4 specification. Point d’ébullition sec: 205°C. Volume du système: 500 ml. Marques approuvées: Mazda Genuine, Motul DOT4, Castrol React DOT3.
How often should I change brake fluid in Mazda CX-5 KF?
Every 40 000 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: DOT3/4.
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