Steyr 900

Coolant capacity & service interval

Steyr 900 coolant capacity ranges from 9,8 to 14,5 liters. Service intervals include checking every 10 hours and changing every 1000 hours or 24 months. The data covers 10 configurations.

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

TypeSpecifications
942, 942a II (1996- )
  • Use: Normal
  • Capacity 9,8 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
948, 948a Turbo II (1996- )
  • Use: Normal
  • Capacity 9,8 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
955, 955a [chassisno. 1739 ->] (1996- )
  • Use: Normal
  • Capacity 13,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
964, 964a Turbo [chassisno. 1739 ->] (1996- )
  • Use: Normal
  • Capacity 13,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
970a Turbo [chassisno. 1739 ->] (1996- )
  • Use: Normal
  • Capacity 13,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
942, 942a I (1992-1996)
  • Use: Normal
  • Capacity 9,8 liter
  • Capacity 10,8 liter (+ heater)
  • Check 10 hours
  • Change 1000 hours/ 24 months
948, 948a Turbo I (1992-1996)
  • Use: Normal
  • Capacity 9,8 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
955, 955a [chassisno. -> 1738] (1992-1996)
  • Use: Normal
  • Capacity 13,5 liter
  • Capacity 14,5 liter (+ heater)
  • Check 10 hours
  • Change 1000 hours/ 24 months
964, 964a Turbo [chassisno. -> 1738] (1992-1996)
  • Use: Normal
  • Capacity 13,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months
970a Turbo [chassisno. -> 1738] (1992-1996)
  • Use: Normal
  • Capacity 13,5 liter
  • Check 10 hours
  • Change 1000 hours/ 24 months

Additional Notes

  • Across all Steyr 900 variants, the coolant check interval is set at every 10 hours of operation, reflecting the demanding thermal cycles typical of agricultural machinery where overheating risks are monitored closely during early running periods.
  • The coolant change interval is uniform across all listed variants at 1000 hours or 24 months, whichever comes first. The dual-trigger format means calendar time alone can mandate a change even when hour accumulation is low, as coolant additives degrade over time regardless of use.
  • The 942 and 942a Series I (1992-1996) lists two capacity figures: 9.8 liters as the base cooling system fill and 10.8 liters when a cab heater is fitted. The 1.0-liter difference represents the additional fluid volume held within the heater core and its connecting hoses.
  • The 955 and 955a variants with chassis numbers up to 1738 (1992-1996) similarly carry a heater-equipped capacity of 14.5 liters against a base of 13.5 liters, again reflecting a 1.0-liter addition for the heater circuit.
  • The larger-displacement variants — the 955, 955a, 964, 964a Turbo, and 970a Turbo — all share a 13.5-liter cooling system capacity, noticeably higher than the 9.8-liter figure seen in the 942 and 948 families, consistent with the greater engine displacement and heat rejection demands of those configurations.
  • From the 942 and 942a Series II (starting 1996) onward, the heater-equipped capacity variant is no longer listed as a separate figure, leaving only the single 9.8-liter value. The same pattern applies to the 955 and 955a from chassis number 1739 onward, where the 14.5-liter heater variant is absent and only 13.5 liters is specified.
  • The chassis number boundary of 1738/1739 serves as the dividing line between Series I and Series II specifications for the 955, 964, and 970a variants, indicating a mid-production engineering revision rather than a strict calendar year cutoff.
  • The 948, 948a Turbo, 964, 964a Turbo, and 970a Turbo variants carry no separate heater-equipped capacity listing in any series, meaning only a single capacity figure applies regardless of cab heater fitment for those configurations.

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