Steyr S25
Power steering fluid capacity & service interval
The Steyr S25 uses power steering fluid with a capacity ranging from 3.5 to 3.7 liters depending on the configuration. Two configurations are covered in the data.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 19S25 (4x2) (1988-1993) |
|
| 19S25 (4x4) (1988-1993) |
|
Additional Notes
- The Steyr S25 power steering system carries different fluid capacities depending on drivetrain configuration, with the 4x2 variant rated at 3.5 liters and the 4x4 variant rated at 3.7 liters.
- The 0.2-liter difference between the 4x2 and 4x4 configurations reflects the additional hydraulic circuit demands associated with a four-wheel-drive steering setup, which typically incorporates more extensive plumbing and additional components.
- Both the 19S25 (4x2) and 19S25 (4x4) capacities are specified under normal use conditions, meaning the figures apply to standard operating environments rather than severe-duty cycles.
- A capacity of 3.5 liters for the 4x2 configuration is relatively substantial for a power steering system, which is consistent with heavy-duty commercial vehicle applications where larger reservoir volumes help manage heat and maintain consistent hydraulic pressure.
- Both configurations share the same 1988-1993 model year span, indicating no capacity revisions were introduced across the production run for either drivetrain variant.