Wolseley 1500

Differential fluid capacity & service interval

Wolseley 1500 differential fluid capacity is 1 liter. Service intervals include checking at 1600 km and 5000 km, and changing at 800 km, 9600 km, and 10000 km. The data covers 5 configurations.

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

TypeSpecifications
  • 1500, Mk III (1961-1965)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Check 5000 km
  • Change 10000 km
  • 1500, Mk II (1960-1961)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Check 1600 km
  • Change 9600 km
  • 1500, Mk II (1960-1961)
  • Rear
  • Use: Initial service
  • Capacity 1 liter
  • Change 800 km
  • 1500, Mk I (1957-1960)
  • Rear
  • Use: Normal
  • Capacity 1 liter
  • Check 1600 km
  • Change 9600 km
  • 1500, Mk I (1957-1960)
  • Rear
  • Use: Initial service
  • Capacity 1 liter
  • Change 800 km

Additional Notes

  • The Wolseley 1500 rear differential holds 1 liter of fluid across all three marks and the full 1957-1965 production span, a capacity consistent with the compact rear axle assemblies typical of small British saloons of the era.
  • The Mk I (1957-1960) and Mk II (1960-1961) share identical normal-use service intervals, with a fluid level check at 1600 km and a full change at 9600 km.
  • An initial service interval of 800 km applies to both the Mk I and Mk II under the initial service use condition, pairing with the standard 1-liter fill. An early drain at 800 km is a break-in practice intended to remove metal particles generated during the differential's initial wear-in period.
  • The Mk III (1961-1965) carries a notably different normal-use schedule, with a fluid level check at 5000 km and a change interval at 10000 km, both figures substantially longer than those specified for the Mk I and Mk II.
  • The check interval shift from 1600 km on the Mk I and Mk II to 5000 km on the Mk III represents a more than threefold increase, reflecting a revised maintenance philosophy for the later mark despite the rear differential capacity remaining unchanged at 1 liter.
  • No initial service interval row is present for the Mk III, whereas both the Mk I and Mk II carry a dedicated 800 km initial change specification alongside their normal-use entries.

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