AC Aceca

Differential fluid capacity & service interval

AC Aceca differential fluid capacity is 2 liters. Service intervals include checking at 3000 km and changing at 7500 km. The data covers 4 configurations.

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

TypeSpecifications
  • Aceca Bristol 105 hp (1956-1963)
  • Rear
  • Use: Normal
  • Capacity 2 liter
  • Check 3000 km
  • Change 7500 km
  • Aceca Bristol 105 hp (1956-1963)
  • Rear, limited slip
  • Use: Normal
  • Capacity 2 liter
  • Check 3000 km
  • Change 7500 km
  • Aceca Bristol 120 hp (1956-1963)
  • Rear
  • Use: Normal
  • Capacity 2 liter
  • Check 3000 km
  • Change 7500 km
  • Aceca Bristol 120 hp (1956-1963)
  • Rear, limited slip
  • Use: Normal
  • Capacity 2 liter
  • Check 3000 km
  • Change 7500 km

Additional Notes

  • The AC Aceca rear differential holds 2 liters of fluid across all four configurations covered in the 1956-1963 model range, including both the 105 hp and 120 hp Bristol engine variants.
  • A 2-liter differential capacity is a relatively modest fill volume, consistent with the compact rear axle housings typical of British sports cars from the mid-twentieth century.
  • Both the standard rear differential and the limited slip differential share an identical 2-liter capacity, meaning the limited slip unit does not require a larger fluid volume despite its additional mechanical components.
  • The check interval for all four configurations is set at 3,000 km under normal use conditions, indicating a relatively frequent inspection schedule relative to the 7,500 km change interval.
  • The change interval across all configurations is 7,500 km under normal use conditions, which is a short drain interval by modern standards and reflects the service expectations common to vehicles of the era.
  • The 105 hp and 120 hp Bristol engine variants carry identical differential fluid specifications in both capacity and service intervals, indicating no differentiation in rear axle servicing requirements between the two power outputs.

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