Heuliez GX
Automatic transmission fluid capacity & service interval
Heuliez GX automatic transmission fluid capacity is 25-27 liters. Service intervals include changes at 20000 km/6 months/500 hours and 240000 km/48 months/6000 hours, plus checks at 120000 km/36 months/3000 hours. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| GX 127 Euro 4/5 (2007- ) |
|
| GX 127 Euro 4/5 (2007- ) |
|
Additional Notes
- The Heuliez GX 127 Euro 4/5, introduced in 2007, carries an automatic transmission fluid capacity of 25-27 liters. A range rather than a fixed figure typically reflects variation between a drain-and-fill service quantity and a full overhaul or dry-fill quantity.
- Under normal use conditions, the GX 127 Euro 4/5 automatic transmission fluid is subject to a change interval of 20,000 km, 6 months, or 500 hours, whichever comes first. The inclusion of an hours-based threshold alongside distance and time intervals is characteristic of vehicles that operate in duty cycles where engine running time accumulates independently of road distance, such as urban transit buses.
- Under extended use conditions, the same transmission carries a fluid check interval of 120,000 km, 36 months, or 3,000 hours, paired with a change interval of 240,000 km, 48 months, or 6,000 hours. The separation of a check interval from a change interval under extended conditions indicates a structured monitoring step before the full fluid replacement is due.
- Comparing the two use conditions, the extended change interval of 240,000 km is twelve times the normal change interval of 20,000 km. The time-based thresholds scale from 6 months under normal use to 48 months under extended use, an eightfold difference.