Hillman Imp

Manual transmission fluid capacity & service interval

Hillman Imp manual transmission fluid capacity ranges from 2,5 to 2,6 liters. Service intervals include a check at 8000 km and a change at 24000 km. The data covers 5 configurations.

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

TypeSpecifications
Imp Californian (1967-1970)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 8000 km
  • Change 24000 km
  • Code: 4/1
Imp Sport (1966-1976)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 8000 km
  • Code: 4/1
Imp Mk II (1965-1973)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 8000 km
  • Change 24000 km
  • Code: 4/1
Imp Super (1965-1976)
  • Use: Normal
  • Capacity 2,5 liter
  • Check 8000 km
  • Change 24000 km
  • Code: 4/1
Imp Mk I (1963-1965)
  • Use: Normal
  • Capacity 2,6 liter
  • Check 8000 km
  • Change 24000 km
  • Code: 4/1

Additional Notes

  • The Hillman Imp uses a transaxle layout across all listed variants, meaning the manual transmission and final drive share a single fluid reservoir rather than separate sumps.
  • The Imp Mk I (1963-1965) carries a transaxle fluid capacity of 2.6 liters, which is slightly higher than the 2.5 liters specified for every other listed variant.
  • The 2.5-liter transaxle capacity applies to the Imp Californian (1967-1970), Imp Mk II (1965-1973), Imp Sport (1966-1976), and Imp Super (1965-1976).
  • A check interval of 8000 km is shared across all five variants under normal use conditions, indicating a consistent top-up inspection schedule regardless of model or production year.
  • A drain-and-refill change interval of 24000 km is specified for the Imp Californian, Imp Mk I, Imp Mk II, and Imp Super, all under normal use conditions.
  • The Imp Sport (1966-1976) has a check interval of 8000 km recorded under normal use but carries no change interval in the specifications, making the fluid service schedule for the Sport distinct from the other four variants.

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