Steyr M900

Coolant capacity & service interval

Steyr M900 coolant capacity ranges from 12 to 13 liters. Service intervals include checking every 10 hours and changing 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 12 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
M958, M958a Turbo (1995-1998)
  • Use: Normal
  • Capacity 12 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
M968, M968a Turbo (1995-1998)
  • Use: Normal
  • Capacity 12 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
M975a Turbo (1995-1998)
  • Use: Normal
  • Capacity 12 liter
  • Capacity 13 liter (+ heater)
  • Check 10 hours
  • Change 1000 hours/ 24 months

Additional Notes

  • The Steyr M900 cooling system holds 12 liters across the M948, M948a, M958, M958a Turbo, M968, and M968a Turbo variants for the 1995-1998 model years.
  • The M975a Turbo shares the standard 12-liter cooling system capacity but carries an alternative figure of 13 liters when equipped with a heater, reflecting the additional fluid volume the heater circuit adds to the total system.
  • A coolant level check interval of 10 hours applies under normal use conditions across all four engine configurations, indicating a relatively frequent inspection schedule typical of agricultural or industrial equipment operating in demanding duty cycles.
  • The coolant change interval is specified at 1000 hours or 24 months under normal use conditions, whichever comes first, and applies uniformly to the M948, M948a, M958, M958a Turbo, M968, M968a Turbo, and M975a Turbo.
  • The dual-interval change specification of 1000 hours or 24 months means a calendar-based limit of two years acts as a ceiling regardless of accumulated operating hours, which is common practice for coolant maintenance to account for additive degradation over time.
  • The consistent 12-liter capacity across the naturally aspirated M948 and M948a and the turbocharged M958, M958a, M968, and M968a variants indicates the cooling system volume was not altered to accommodate the turbocharger in those configurations.

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