Unimog (MB) 425

Differential fluid capacity & service interval

Unimog (MB) 425 differential fluid capacity is 2,5 liters. Service intervals include checking at 100 hours and changing at 1600 hours or 12 months. The data covers 4 configurations.

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

TypeSpecifications
  • U 1300, 1500 (425) (1982-1992)
  • Front
  • Use: Normal
  • Capacity 2,5 liter
  • Check 100 hours
  • Change 1600 hours/ 12 months
  • U 1300, 1500 (425) (1982-1992)
  • Rear
  • Use: Normal
  • Capacity 2,5 liter
  • Check 100 hours
  • Change 1600 hours/ 12 months
  • U 1300 (425) (1976-1984)
  • Front
  • Use: Normal
  • Capacity 2,5 liter
  • Check 100 hours
  • Change 1600 hours/ 12 months
  • U 1300 (425) (1976-1984)
  • Rear
  • Use: Normal
  • Capacity 2,5 liter
  • Check 100 hours
  • Change 1600 hours/ 12 months

Additional Notes

  • The Unimog (MB) 425 front and rear differentials each hold 2.5 liters of fluid, meaning both axles carry equal fill volumes rather than one being larger than the other.
  • A check interval of 100 hours applies to both the front and rear differentials across all listed configurations, reflecting the hour-based service tracking typical of heavy-duty work vehicles rather than distance-based schedules.
  • The change interval is set at 1,600 hours or 12 months, whichever comes first, combining an operational hour threshold with a fixed calendar limit under normal use conditions.
  • The U 1300 variant produced from 1976-1984 carries the same 2.5-liter differential capacity and identical service intervals as the later U 1300 and U 1500 configurations produced from 1982-1992, indicating no capacity revision occurred across the model range covered by these specifications.
  • The overlap between the 1976-1984 and 1982-1992 production periods means the U 1300 appears in both configuration groups for the years 1982-1984, though the differential fluid specifications remain unchanged between the two entries.

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