Brake fluid VW Polo VI (2017–2023) — DOT 4 specification
Brake fluid for VW Polo VI (2017–2023) — required specification, boiling points, system volume, and approved brands.
Technische specificaties
| Parameter | Value |
|---|---|
| Merk / Model | VW Polo VI |
| Productiejaren | 2017–2023 |
| Vloeistofspecificatie | DOT 4 |
| Droog kookpunt | 230°C |
| Nat kookpunt | 155°C |
| Systeemvolume | 500 ml |
| Verversingsinterval | 60 000 km / jaar |
Goedgekeurde merken
Castrol DOT 4 / ATE Super DOT 4 / Bosch DOT 4 / Liqui Moly DOT 4
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). VW requires DOT 4 with a dry boiling point of at least 230°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)
Veelgestelde vragen
What brake fluid does VW Polo VI use?
DOT 4 specification. Droog kookpunt: 230°C. Systeemvolume: 500 ml. Goedgekeurde merken: Castrol DOT 4 / ATE Super DOT 4 / Bosch DOT 4 / Liqui Moly DOT 4.
How often should I change brake fluid in VW Polo VI?
Every 60 000 km or every jaar — 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.
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