Bentley Eight, Mulsanne

Differential fluid capacity & service interval

Bentley Eight and Mulsanne require 2,8 liters of differential fluid. Service intervals occur every 50000 km or 36 months. The data covers 2 configurations.

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

TypeSpecifications
  • Eight (1986-1992)
  • Rear
  • Use: Normal
  • Capacity 2,8 liter
  • Change 50000 km/ 36 months
  • Mulsanne S (1986-1992)
  • Rear
  • Use: Normal
  • Capacity 2,8 liter
  • Change 50000 km/ 36 months

Additional Notes

  • The Bentley Eight and Mulsanne S share an identical rear differential fluid capacity of 2.8 liters, which is consistent with a service fill specification rather than a full overhaul or dry-fill volume.
  • A 2.8-liter capacity in a rear differential of this era typically reflects a live rear axle housing designed for sustained lubrication under the demands of a large, heavy luxury sedan.
  • The specified change interval for both configurations is 50,000 km or 36 months, whichever comes first, applied under normal use conditions.
  • A 36-month time limit alongside the distance interval means that low-mileage operation still triggers a fluid change on a calendar basis, preventing degradation from moisture absorption and oxidation over time.
  • Both the Eight and Mulsanne S carry the same capacity and interval figures across the full 1986-1992 model year span, indicating no revision to the rear differential service specification during that period.

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