Opel Frontera B, U99

Automatic transmission fluid capacity & service interval

Opel Frontera B, U99 automatic transmission fluid capacity ranges from 3 to 5,5 liters. Service intervals require checks every 24 months or 30000 km. The data covers 5 configurations.

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

TypeSpecifications
Frontera B 2.2 DTI (88 kW) (2002-2004)
  • Use: Normal
  • Capacity 3 liter
  • Check 24 months/ 30000 km
  • Code: GM 4L30-E 4/1
Frontera B 2.2 DTI (85 kW) (2000-2002)
  • Use: Normal
  • Capacity 3 liter
  • Check 24 months/ 30000 km
  • Code: GM 4L30-E 4/1
Frontera B 3.2 24V (2000-2004)
  • Use: Normal
  • Capacity 3 liter
  • Check 24 months/ 30000 km
  • Code: GM 4L30-E 4/1
Frontera B 2.2 DTI (85 kW) (1998-2000)
  • Use: Normal
  • Capacity 3 liter
  • Check 24 months/ 30000 km
  • Code: GM 4L30-E 4/1
Frontera B 3.2 24V (1998-2000)
  • Use: Normal
  • Capacity 5,5 liter
  • Check 24 months/ 30000 km
  • Code: GM 4L30-E 4/1

Additional Notes

  • The Opel Frontera B, U99 automatic transmission fluid capacity splits into two distinct values across the lineup: 3 liters for the diesel variants and most petrol configurations, and 5.5 liters for the 3.2 24V petrol in its 1998-2000 form.
  • A 5.5-liter capacity, as seen in the 1998-2000 Frontera B 3.2 24V, is characteristic of a full overhaul or dry-fill figure, accounting for fluid held within the torque converter and transmission passages when completely drained and refilled.
  • The 3-liter capacity recorded across the 2.2 DTI variants and the 2000-2004 3.2 24V reflects a service fill level, representing the volume needed to restore fluid to the correct operating level during a routine service rather than a complete system drain.
  • The 3.2 24V petrol engine saw a capacity reduction from 5.5 liters in the 1998-2000 period down to 3 liters from 2000-2004, indicating a change in the transmission unit or the service procedure applied to that configuration.
  • The 2.2 DTI engine appeared in two successive output ratings across the production span: 85 kW covering 1998-2002 and 88 kW covering 2002-2004, yet both share an identical 3-liter automatic transmission fluid capacity and the same check interval.
  • All five configurations carry a uniform check interval of 24 months or 30,000 km under normal use conditions, whichever comes first, applying consistently across both diesel and petrol engine families throughout the 1998-2004 period.
  • The interval structure specifies a fluid level check rather than a full fluid replacement, meaning the 3-liter and 5.5-liter figures relate to capacity reference points used during inspection and top-up procedures at each 24-month or 30,000 km interval.

Other Systems