Unimog (MB) 425

Power steering fluid capacity & service interval

Unimog (MB) 425 uses power steering fluid with a capacity of 3,25 liters. Service intervals occur every 2400 hours or 24 months. The data covers 2 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
U 1300, 1500 (425) (1982-1992)
  • Use: Normal
  • Capacity 3,25 liter
  • Change 2400 hours/ 24 months
U 1300 (425) (1976-1984)
  • Use: Normal
  • Capacity 3,25 liter
  • Change 2400 hours/ 24 months

Additional Notes

  • The Unimog (MB) 425 power steering system holds 3.25 liters of fluid, a figure that applies uniformly across both the U 1300 (1976-1984) and the U 1300, 1500 (1982-1992) configurations.
  • A service interval of 2,400 hours or 24 months is specified for the U 1300 (1976-1984) under normal use conditions, pairing an engine-hours threshold with a calendar-based limit so whichever comes first governs the change.
  • The U 1300, 1500 (1982-1992) carries the identical 2,400-hour or 24-month interval under normal use, meaning the addition of the 1500 variant to the specification group did not alter the fluid change schedule relative to the earlier U 1300 entry.
  • The 3.25-liter capacity is consistent with a service fill figure, representing the volume required when draining and refilling the power steering reservoir rather than a full system overhaul quantity that would typically account for additional fluid retained in lines and the steering gear itself.
  • The overlap period of 1982-1984 sees both specification rows technically applicable to the U 1300, reflecting a transition in how the model grouping was defined across the two entries rather than a change in the underlying fluid capacity or interval values.

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