Morris Marina, ADO28

Automatic transmission fluid capacity & service interval

Morris Marina and ADO28 models utilize automatic transmission fluid with a capacity range of 3 to 6,54 liters. Service intervals require checks every 10000 km or 6 months. The data covers 4 configurations.

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

TypeSpecifications
Marina 1.3 (1975-1980)
  • Use: Normal
  • Capacity 6,54 liter
  • Check 10000 km/ 6 months
  • Code: 3/1
Marina 1.8 (1975-1978)
  • Use: Normal
  • Capacity 6,54 liter
  • Check 10000 km/ 6 months
  • Code: 3/1
Marina 1.3 (1971-1975)
  • Use: Normal
  • Capacity 5,4 liter
  • Capacity 3 liter (Torque converter)
  • Check 10000 km/ 6 months
  • Code: 3/1
Marina 1.8 (1971-1975)
  • Use: Normal
  • Capacity 5,4 liter
  • Capacity 3 liter (Torque converter)
  • Check 10000 km/ 6 months
  • Code: 3/1

Additional Notes

  • The Morris Marina ADO28 automatic transmission fluid specifications cover two distinct capacity figures depending on the model year bracket, with earlier 1971-1975 variants listing a split capacity and later variants listing a single unified figure.
  • For the Marina 1.3 and 1.8 produced between 1971-1975, the total automatic transmission fluid capacity is 5.4 liters, with a separate torque converter capacity of 3 liters identified within that system.
  • The 3-liter torque converter figure in the 1971-1975 specifications represents the fluid volume held within the torque converter housing itself, which is a hydraulic coupling component distinct from the main transmission sump.
  • From 1975 onward, both the 1.3 and 1.8 variants carry a single capacity figure of 6.54 liters, with no separate torque converter value listed, indicating the capacity is expressed as a combined total for the transmission system.
  • The increase from 5.4 liters to 6.54 liters between the 1971-1975 and post-1975 specifications represents a difference of 1.14 liters across the same engine displacement variants, reflecting a change in how the total system capacity is measured or reported.
  • The 1.8 variant's production in the automatic transmission specification ends at 1978, while the 1.3 variant's specification extends to 1980, meaning the two engine options do not share an identical production window under the automatic transmission configuration.
  • All four rows carry a normal use condition, and under that condition the specified service check interval is 10,000 km or 6 months, whichever comes first, applying uniformly across both engine sizes and both model year brackets.
  • The interval is expressed as a check rather than a drain-and-fill, which in transmission service terminology typically refers to verifying fluid level and condition rather than a full fluid replacement at each interval.

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