Triumph 2000/2.5 PI/2500

Automatic transmission fluid capacity & service interval

Triumph 2000/2.5 PI/2500 automatic transmission fluid capacity ranges from 7 to 7,66 liters. Service intervals include checks every 10000 km. The data covers 8 configurations.

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

TypeSpecifications
2000TC Mk 2 (1975-1977)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2500S Mk 2 (1974-1977)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2500TC Mk 2 (1974-1975)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2500TC Mk 2 (1974-1977)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2.5 PI Mk 2 (1969-1975)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2000 Mk 2 (1969-1977)
  • Use: Normal
  • Capacity 7 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 35
2.5 PI Mk 1 (1968-1969)
  • Use: Normal
  • Capacity 7,66 liter (+ torque converter)
  • Code: Borg Warner 35
2000 Mk 1 (1963-1969)
  • Use: Normal
  • Capacity 7,66 liter (+ torque converter)
  • Code: Borg Warner 35

Additional Notes

  • The Triumph 2000/2.5 PI/2500 automatic transmission specifications cover two distinct capacity figures across the model range: 7.66 liters for the Mk 1 variants and 7 liters for the Mk 2 variants.
  • The 7.66-liter capacity listed for the 2000 Mk 1 (1963-1969) and the 2.5 PI Mk 1 (1968-1969) includes an additional volume for the torque converter, meaning the figure reflects a full system fill rather than the transmission sump alone.
  • The torque converter is an integral part of an automatic transmission's hydraulic circuit, and including its volume in the capacity figure is characteristic of a total dry-fill or overhaul specification rather than a routine service drain-and-refill quantity.
  • Mk 2 variants across the 2000, 2000TC, 2500S, 2500TC, and 2.5 PI lines all share a 7-liter capacity, with the additional note that an oil cooler is part of the system, which accounts for fluid volume beyond the transmission unit itself.
  • The reduction from 7.66 liters in the Mk 1 to 7 liters in the Mk 2 coincides with the transition from a torque converter inclusion to an oil cooler inclusion in the capacity notation, suggesting a change in how the auxiliary circuit volume was accounted for between generations.
  • All Mk 2 configurations carry a fluid check interval of 10,000 km under normal use conditions, a specification absent from the Mk 1 rows, where no service interval is listed.
  • The 10,000 km interval specified for the Mk 2 variants is a check interval rather than a change interval, meaning the service action at that mileage point is inspection and top-up rather than a full fluid replacement.
  • The 2500TC Mk 2 appears across two overlapping year ranges, 1974-1975 and 1974-1977, both carrying identical 7-liter capacity and 10,000 km check interval specifications under normal use conditions.

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