Opel Astra G Classic II, T98

Manual transmission fluid capacity & service interval

Opel Astra G Classic II, T98 manual transmission fluid capacity is 1,6 liters. Service intervals consist of checks every 12 months or 30000 km. The data covers 3 configurations.

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

TypeSpecifications
Astra G Classic II 1.4 16V (2004-2009)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 12 months/ 30000 km
  • Code: F13 5/1
Astra G Classic II 1.6 16V (2004-2009)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 12 months/ 30000 km
  • Code: F17+ 5/1
Astra G Classic II 1.7 CDTi (2004-2009)
  • Use: Normal
  • Capacity 1,6 liter
  • Check 12 months/ 30000 km
  • Code: F17 5/1

Additional Notes

  • The Opel Astra G Classic II (T98) manual transaxle holds 1.6 liters of fluid across all three listed engine variants: the 1.4 16V, 1.6 16V, and 1.7 CDTi.
  • A 1.6-liter transaxle fill is a service fill figure, meaning the amount used when topping up or refilling during routine maintenance rather than a full overhaul drain-and-fill quantity.
  • The 1.4 16V, 1.6 16V, and 1.7 CDTi share an identical service interval of 12 months or 30,000 km, whichever comes first, under normal use conditions.
  • The interval specification is listed as a check interval rather than a change interval, meaning the service action at 12 months or 30,000 km is an inspection of fluid level and condition rather than a mandatory full fluid replacement.
  • Normal use conditions govern all three configurations for the 2004-2009 model years, meaning the 12-month or 30,000 km check interval applies to standard driving environments rather than demanding or high-stress operating conditions.
  • The uniform 1.6-liter capacity across the petrol and diesel variants in the 2004-2009 range indicates a shared transaxle unit regardless of engine type.

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