Steyr S23

Coolant capacity & service interval

Steyr S23 coolant capacity is 32 liters. Service intervals occur every 24 months. The data covers 1 configuration.

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

TypeSpecifications
15S23 4x4 (1988-1996)
  • Use: Normal
  • Capacity 32 liter
  • Change 24 months

Additional Notes

  • The Steyr S23 cooling system capacity of 32 liters places it firmly in heavy-duty commercial vehicle territory, where large coolant volumes are necessary to manage heat across high-displacement engines and extended operational cycles.
  • The 32-liter figure represents a full cooling system fill, meaning the volume required to charge the entire circuit including the engine block, cylinder head passages, radiator, and associated hoses and reservoirs.
  • The 15S23 4x4 configuration carries a 24-month coolant change interval under normal use conditions, reflecting a time-based service schedule rather than one tied to mileage or operating hours.
  • A 24-month interval on a vehicle of this class is consistent with conventional coolant formulations, which typically lose corrosion inhibitor effectiveness within that timeframe regardless of distance traveled.

Other Systems