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Brake fluid Citroen C5 Aircross (2018–2023) — DOT 4 specification

Brake fluid for Citroen C5 Aircross (2018–2023) — required specification, boiling points, system volume, and approved brands.

Technische specificaties

ParameterValue
Merk / ModelCitroen C5 Aircross
Productiejaren2018–2023
VloeistofspecificatieDOT 4
Droog kookpunt230°C
Nat kookpunt155°C
Systeemvolume500 ml
Verversingsinterval60 000 km / jaar

Goedgekeurde merken

Total Brake Fluid DOT 4 / Castrol DOT 4 / ATE Super 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). Citroen requires DOT 4 with a dry boiling point of at least 230°C.

How to Check Brake Fluid Condition

  1. Test strips — dip a strip in the reservoir; colour indicates moisture content
  2. Electronic tester — measures boiling point directly (most accurate)
  3. Visual inspection — dark/brown fluid indicates it must be replaced (fresh fluid is amber/clear)

Veelgestelde vragen

What brake fluid does Citroen C5 Aircross use?

DOT 4 specification. Droog kookpunt: 230°C. Systeemvolume: 500 ml. Goedgekeurde merken: Total Brake Fluid DOT 4 / Castrol DOT 4 / ATE Super DOT 4.

How often should I change brake fluid in Citroen C5 Aircross?

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.