Unimog (MB) 437

Power steering fluid capacity & service interval

Unimog (MB) 437 power steering fluid capacity is 3,25 liters. Service intervals include checks at 300 hours and changes at 2400 hours or 24 months. The data covers 4 configurations.

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

TypeSpecifications
U 1350 L U 1500 (437) (1992-2001)
  • Use: Normal
  • Capacity 3,25 liter
  • Check 300 hours
  • Change 2400 hours/ 24 months
U 1800, 1850 L, 1850 L 38 (437) (1992-2001)
  • Use: Normal
  • Capacity 3,25 liter
  • Check 300 hours
  • Change 2400 hours/ 24 months
U 2450, 2450 L, 2450 L 38 (437) (1992-2001)
  • Use: Normal
  • Capacity 3,25 liter
  • Check 300 hours
  • Change 2400 hours/ 24 months
U 2150, 2150 L, 2150 L 38 (437) (1991-2001)
  • Use: Normal
  • Capacity 3,25 liter
  • Check 300 hours
  • Change 2400 hours/ 24 months

Additional Notes

  • All four variant groups within the Unimog (MB) 437 series share an identical power steering fluid capacity of 3.25 liters, which represents the total system fill volume for the steering hydraulic circuit.
  • The U 2150, 2150 L, and 2150 L 38 variants carry a start year of 1991, making them the earliest-covered configurations in the 437 series for this system, while the remaining variant groups begin coverage from 1992.
  • The check interval is set at 300 operating hours across all listed variants, reflecting a schedule tied to engine hours rather than calendar time, which is standard practice for heavy-duty off-road and utility vehicles where annual mileage is not a reliable measure of use.
  • The fluid change interval is specified as 2400 hours or 24 months, whichever comes first, applying under normal use conditions for all listed variant groups.
  • The dual-format change interval of 2400 hours and 24 months means that a vehicle accumulating low operating hours could still require a fluid change on the calendar threshold alone, and vice versa for high-utilization units reaching 2400 hours before two years have elapsed.
  • The 3.25-liter capacity figure is consistent across the U 1350 L / U 1500, U 1800 / 1850 L / 1850 L 38, U 2150 / 2150 L / 2150 L 38, and U 2450 / 2450 L / 2450 L 38 groups, indicating no variation in power steering system volume despite differences in vehicle designation and gross weight class across the 437 series.

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