Saturn Astra (USA / CAN)

Automatic transmission fluid capacity & service interval

Saturn Astra (USA / CAN) requires automatic transmission fluid with a capacity of 4 liters. Service intervals include changes at 80000 km and 160000 km. The data covers 2 configurations.

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

TypeSpecifications
Astra 1.8 (2008-2009)
  • Use: Normal
  • Capacity 4 liter
  • Change 160000 km
  • Code: 5/1
Astra 1.8 (2008-2009)
  • Use: Severe
  • Capacity 4 liter
  • Change 80000 km
  • Code: 5/1

Additional Notes

  • The Saturn Astra (USA/CAN) with the 1.8-liter engine carries an automatic transaxle fluid capacity of 4 liters, which represents a service fill volume rather than a full overhaul or dry fill quantity.
  • Under normal use conditions, the automatic transaxle fluid change interval is set at 160,000 km, placing it among the longer-interval transmission service schedules commonly found on modern passenger vehicles.
  • Under severe use conditions, the same 1.8-liter automatic transaxle calls for a fluid change at 80,000 km, exactly half the normal-use interval, reflecting the added thermal and mechanical stress associated with severe driving patterns.
  • The fluid capacity of 4 liters remains consistent across both the normal and severe use specifications for the 2008-2009 model years, meaning the service interval is the only variable that shifts between the two use conditions.

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