Vauxhall Firenza

Manual transmission fluid capacity & service interval

Vauxhall Firenza uses manual transmission fluid with a capacity range of 0,5 to 1,4 liters. Service intervals occur every 20000 km or 6 months. The data covers 6 configurations.

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

TypeSpecifications
Firenza 1.3 (1972-1975)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 20000 km/ 6 months
  • Code: 4/1
Firenza 1.8 (1972-1975)
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • Code: 4/1
Firenza 2.3 (1972-1975)
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • Code: 4/1
Firenza 1.2 (1971-1972)
  • Use: Normal
  • Capacity 0,5 liter
  • Check 20000 km/ 6 months
  • Code: 4/1
Firenza 2.0 (1971-1972)
  • Use: Normal
  • Capacity 1,36 liter
  • Check 20000 km/ 6 months
  • Code: 4/1
Firenza 1.6 (1970-1972)
  • Use: Normal
  • Capacity 1,4 liter
  • Check 20000 km/ 6 months
  • Code: 4/1

Additional Notes

  • The Vauxhall Firenza manual transmission fluid capacity splits clearly along engine displacement lines. The 1.2 and 1.3 variants hold 0.5 liters, while the 1.6, 1.8, and 2.3 variants each hold 1.4 liters, reflecting the larger gearbox housings paired with higher-displacement engines.
  • The 2.0 Firenza (1971-1972) carries a capacity of 1.36 liters, a value that sits fractionally below the 1.4-liter figure shared by the other larger-displacement variants. This slight difference suggests a marginally smaller transmission unit was fitted to the 2.0 application during that production period.
  • The 0.5-liter capacity of the 1.2 and 1.3 transmissions is notably low relative to the rest of the range. Capacities at this level are typical of compact, light-duty gearboxes designed for smaller four-cylinder engines with lower torque output.
  • All six configurations share an identical check interval of 20,000 km or 6 months under normal use conditions, whichever comes first. The dual-trigger format, combining a distance threshold with a time limit, accounts for vehicles that accumulate low mileage within a given period.
  • The 1.3 and 1.8 variants both entered production in 1972, replacing the 1.2 and continuing alongside the 1.6 respectively, yet both retain the same check interval as their predecessors and counterparts across the range.
  • A 1.4-liter transmission fluid capacity, as seen on the 1.6, 1.8, and 2.3 variants, is consistent with medium-sized manual gearboxes of the early 1970s European passenger car segment, where fluid volumes in the 1.2 to 1.5-liter range were standard for units handling moderate torque loads.

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