BMC Austin Morris J2

Automatic transmission fluid capacity & service interval

BMC Austin Morris J2 uses automatic transmission fluid with a capacity of 6,4 liters. Service intervals consist of checks every 5000 km or 3 months. The data covers 2 configurations.

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

TypeSpecifications
J2 (1.5) (1965-1972)
  • Use: Normal
  • Capacity 6,4 liter
  • Check 5000 km/ 3 months
  • Code: 3/1
J2 (1.6) (1965-1967)
  • Use: Normal
  • Capacity 6,4 liter
  • Check 5000 km/ 3 months
  • Code: 3/1

Additional Notes

  • The BMC Austin Morris J2 automatic transmission holds 6.4 liters of fluid across both the 1.5-liter and 1.6-liter engine configurations, placing the fill volume in a range typical of older automatic gearboxes from the mid-1960s era.
  • The 1.5-liter variant covers the 1965-1972 model years, while the 1.6-liter variant is specific to 1965-1967, meaning the two configurations share an overlapping production window during which both carry identical 6.4-liter capacity figures.
  • Both configurations carry a normal use condition tied to the 6.4-liter capacity, meaning the specified volume applies to standard operating circumstances rather than severe-duty or first-change scenarios.
  • The check interval for automatic transmission fluid is set at 5,000 km or 3 months, whichever comes first, reflecting a time-based component alongside the distance-based threshold that accounts for vehicles covering low annual mileage.
  • The 5,000 km check interval is notably short by modern standards, consistent with maintenance expectations of 1960s-era automatic transmissions, which relied on more frequent inspections to monitor fluid condition and level.

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