BMC Austin Morris J2

Manual transmission fluid capacity & service interval

BMC Austin Morris J2 manual transmission fluid capacity is 2,6 liters. Service intervals include checking every 5000 km or 3 months, changing every 20000 km or 12 months, checking every 5000 km or 150 hours, and changing every 10000 km or 300 hours. The data covers 4 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 2,6 liter
  • Check 5000 km/ 3 months
  • Change 20000 km/ 12 months
  • Code: 4/1
J2 (1.6) (1965-1967)
  • Use: Normal
  • Capacity 2,6 liter
  • Check 5000 km/ 3 months
  • Change 20000 km/ 12 months
  • Code: 4/1
J2 (1960-1965)
  • Use: Normal
  • Capacity 2,6 liter
  • Check 5000 km/ 150 hours
  • Change 10000 km/ 300 hours
  • Code: 4/1
J2 Diesel (1960-1965)
  • Use: Normal
  • Capacity 2,6 liter
  • Check 5000 km/ 150 hours
  • Change 10000 km/ 300 hours
  • Code: 4/1

Additional Notes

  • Across all four configurations of the BMC Austin Morris J2, the manual transmission fluid capacity is 2.6 liters, a figure consistent between the petrol and diesel variants as well as across the full 1960-1972 model range.
  • The 1960-1965 petrol and diesel configurations share identical service intervals expressed in both distance and operating hours, with a check interval of 5,000 km or 150 hours and a change interval of 10,000 km or 300 hours under normal use conditions.
  • The dual-unit interval format used for the 1960-1965 configurations, combining kilometers with operating hours, reflects a service vehicle application where engine hours are a more meaningful measure of wear than road distance alone.
  • The J2 (1.5) and J2 (1.6) variants from 1965 onward carry a check interval of 5,000 km or 3 months and a change interval of 20,000 km or 12 months under normal use conditions, replacing the hour-based intervals of the earlier configurations with calendar-based ones.
  • The change interval for the 1965-1972 configurations, at 20,000 km or 12 months, is double the 10,000 km interval specified for the 1960-1965 configurations, indicating a longer fluid service life expectation in the later variants.
  • The J2 (1.6) variant covers the 1965-1967 period, while the J2 (1.5) begins in 1965 as well, meaning both engine displacements were available concurrently during that two-year overlap, yet both share the same 2.6-liter transmission capacity and identical service intervals.

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