Humber Sceptre

Manual transmission fluid capacity & service interval

Humber Sceptre manual transmission fluid capacity ranges from 1,56 to 2,6 liters. Service intervals include 800 km, 5000 km, 8000 km/6 months, 10000 km, and 48000 km. The data covers 5 configurations.

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

TypeSpecifications
Sceptre Mark III (1967-1976)
  • Use: Normal
  • Capacity 2,6 liter
  • Check 8000 km/ 6 months
  • Change 48000 km
  • Code: 4/1
Sceptre Mark II (1965-1967)
  • Use: Normal
  • Capacity 1,56 liter
  • Check 5000 km
  • Change 10000 km
  • Code: 4/1
Sceptre Mark II (1965-1967)
  • Use: Initial service
  • Capacity 1,56 liter
  • Change 800 km
  • Code: 4/1
Sceptre Mark I (1963-1965)
  • Use: Normal
  • Capacity 1,56 liter
  • Capacity 2,27 liter (+ overdrive)
  • Check 5000 km
  • Change 10000 km
  • Code: 4/1
Sceptre Mark I (1963-1965)
  • Use: Initial service
  • Capacity 1,56 liter
  • Capacity 2,27 liter (+ overdrive)
  • Change 800 km
  • Code: 4/1

Additional Notes

  • The Humber Sceptre Mark I and Mark II share an identical standard transmission capacity of 1.56 liters, while the Mark I with overdrive requires 2.27 liters, reflecting the additional fluid volume the overdrive unit holds.
  • The Mark I overdrive capacity of 2.27 liters applies under normal use conditions, meaning the 0.71-liter difference over the standard fill is a consistent service requirement rather than an overhaul-specific figure.
  • Mark I and Mark II specifications include an initial service change interval of 800 km, a break-in drain intended to remove metal particles and contaminants generated during early transmission wear-in.
  • Under normal use, the Mark I and Mark II share a check interval of 5,000 km and a change interval of 10,000 km, placing both variants on identical ongoing service schedules despite the Mark I's overdrive option.
  • The Mark III carries a notably larger standard capacity of 2.6 liters, a substantial increase over the 1.56-liter figure of the Mark I and Mark II, indicating a physically larger gearbox assembly.
  • The Mark III change interval of 48,000 km under normal use is significantly longer than the 10,000 km interval specified for the Mark I and Mark II, representing a fourfold extension in fluid life expectancy between generations.
  • The Mark III check interval is expressed as 8,000 km or 6 months, whichever comes first, introducing a time-based condition not present in the Mark I or Mark II specifications.
  • No initial service interval appears in the Mark III specifications, in contrast to the 800 km initial change listed for both the Mark I and Mark II.

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