Mercedes-Benz T-Class, W420 (EU)
Brake fluid capacity & service interval
Mercedes-Benz T-Class, W420 (EU) requires brake fluid with a capacity range between min and max. Service intervals occur every 24 months. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| T 160, 420.853 (2021- ) |
|
| T 160 d, 420.823 (2021- ) |
|
| T 180, 420.863 (2021- ) |
|
| T 180 d, 420.833 (2021- ) |
|
Additional Notes
- Across all four variants of the Mercedes-Benz T-Class W420 (EU), the brake fluid fill level is specified as between the minimum and maximum marks rather than as a fixed volume, which is standard practice for hydraulic brake systems where the reservoir level is the reference point rather than a measured capacity.
- The T 160 d (420.823), T 160 (420.853), T 180 d (420.833), and T 180 (420.863) all share an identical 24-month change interval under normal use conditions.
- A 24-month brake fluid change interval reflects the hygroscopic nature of brake fluid, meaning the fluid absorbs moisture from the atmosphere over time, which lowers its boiling point regardless of mileage accumulated.
- The interval specification is tied to normal use conditions across all four variants, and no separate severe-use interval is listed for any of them.
- The note designating the hydraulic brake/clutch system applies uniformly to all four variants, indicating the shared reservoir arrangement covers both braking and clutch actuation in a single hydraulic circuit.
- All four variants carry a 2021 starting year, and the specifications apply consistently from that point forward without differentiation by production sub-period.