Irisbus Crealis
Automatic transmission fluid capacity & service interval
Irisbus Crealis automatic transmission fluid capacity is 31 liters. Service intervals include checks at 40000 km, 12 months, or 4000 hours, and changes at 120000 km, 36 months, or 12000 hours. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Crealis 12m Euro 4/5/EEV (2009-2014) |
|
| Crealis 18m Euro 4/5/EEV (2009-2014) |
|
Additional Notes
- Both the Irisbus Crealis 12m and 18m variants share an identical automatic transmission fluid capacity of 31 liters, which is consistent with a full-system service fill figure typical of heavy-duty automatic transmissions found in transit bus applications.
- The 31-liter capacity applies uniformly across the Euro 4, Euro 5, and EEV emission standard variants within the 2009-2014 production range, indicating no capacity differentiation tied to emission control specification.
- Under normal use conditions, the fluid check interval is set at 40,000 km, 12 months, or 4,000 hours, whichever comes first, reflecting a multi-trigger approach common in commercial vehicle maintenance scheduling where any one threshold reached initiates the service action.
- The change interval under normal use conditions is 120,000 km, 36 months, or 12,000 hours, placing the drain cycle at exactly three times the distance and time thresholds of the check interval.
- The inclusion of an operating hours threshold alongside distance and calendar intervals acknowledges that transit buses frequently accumulate engine-on time in low-mileage, high-idle scenarios such as urban stop-and-go routes, where hours can be a more meaningful wear indicator than kilometers alone.