Steyr M900

Manual transmission fluid capacity & service interval

Steyr M900 manual transmission fluid has a capacity range of 22 to 30 liters. Service intervals include checks every 12 months or 500 hours and changes every 1000 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
M948, M 948a (1995-1998)
  • Use: Normal
  • Capacity 22 liter
  • Check 12 months/ 500 hours
  • Change 1000 hours/ 24 months
  • Code: 16/8
M958, M958a Turbo (1995-1998)
  • Use: Normal
  • Capacity 22 liter
  • Check 12 months/ 500 hours
  • Change 1000 hours/ 24 months
  • Code: 16/8
M968, M968a Turbo (1995-1998)
  • Use: Normal
  • Capacity 28 liter
  • Check 12 months/ 500 hours
  • Change 1000 hours/ 24 months
  • Code: 16/8
M975a Turbo (1995-1998)
  • Use: Normal
  • Capacity 30 liter
  • Check 12 months/ 500 hours
  • Change 1000 hours/ 24 months
  • Code: 16/8

Additional Notes

  • The Steyr M900 manual transmission fluid specifications cover four distinct configurations across the 1995-1998 model years: the M948/M948a, M958/M958a Turbo, M968/M968a Turbo, and M975a Turbo.
  • All four configurations share a transaxle, manual designation, meaning the transmission and drive axle are housed within a single integrated unit, which accounts for the notably large fluid capacities involved.
  • The M948 and M948a carry a transaxle fluid capacity of 22 liters, a figure consistent with heavy-duty agricultural or utility vehicle transaxle assemblies rather than conventional passenger vehicle gearboxes.
  • The M958 and M958a Turbo variants also hold 22 liters, placing them at the same capacity level as the M948 series despite the addition of turbocharging.
  • The M968 and M968a Turbo step up to a 28-liter capacity, representing a 6-liter increase over the M948 and M958 configurations within the same model range.
  • The M975a Turbo carries the largest transaxle fluid capacity in the range at 30 liters, the highest figure across all four listed configurations.
  • Under normal use conditions, all four configurations share an identical fluid check interval of every 12 months or 500 operating hours, whichever comes first.
  • The fluid change interval for all configurations under normal use is set at 1,000 hours or 24 months, a dual-trigger schedule that accounts for both time elapsed and actual operational load.

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