Triumph TR series

Manual transmission fluid capacity & service interval

Triumph TR series manual transmission fluid capacity ranges from 0,8 to 2 liters. Service intervals include checking at 9600 km, 10000 km, 12000 miles, and 20000 km, with changes at 19200 km or 12000 miles. The data covers 12 configurations.

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

TypeSpecifications
TR7 (1980-1982)
  • Use: Normal
  • Capacity 1,1 liter
  • Check 20000 km/ 12000 miles
  • Code: 5/1
TR8, EFI (1980-1981)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 10000 km
  • Code: 5/1
TR8 (1978-1980)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 10000 km
  • Code: 5/1
TR7 (1974-1979)
  • Use: Normal
  • Capacity 1,1 liter
  • Check 10000 km
  • Code: 4/1
TR7 (1974-1979)
  • Use: Normal
  • Capacity 1,1 liter
  • Check 10000 km
  • Code: 5/1
TR6 PI (1969-1976)
  • Use: Normal
  • Capacity 1,1-2 liter
  • Check 20000 km/ 12000 miles
  • Code: 4/1
TR5 PI (1967-1968)
  • Use: Normal
  • Capacity 1,1-2 liter
  • Check 20000 km/ 12000 miles
  • Code: 4/1
TR4A (1965-1967)
  • Use: Normal
  • Capacity 0,8 liter (Mechanical transmission)
  • Capacity 0,8 liter (Overdrive unit)
  • Check 20000 km/ 12000 miles
  • Code: 4/1
TR3B (1962-1962)
  • Use: Normal
  • Capacity 0,8 liter (Mechanical transmission)
  • Capacity 0,8 liter (Overdrive unit)
  • Check 9600 km/ 6000 miles
  • Change 19200 km/ 12000 miles
  • Code: 4/1
TR4 (1961-1965)
  • Use: Normal
  • Capacity 0,8 liter (Mechanical transmission)
  • Capacity 0,8 liter (Overdrive unit)
  • Check 9600 km/ 6000 miles
  • Change 19200 km/ 12000 miles
  • Code: 4/1
TR3A (1957-1961)
  • Use: Normal
  • Capacity 0,8 liter (Mechanical transmission)
  • Capacity 0,8 liter (Overdrive unit)
  • Check 9600 km/ 6000 miles
  • Change 19200 km/ 12000 miles
  • Code: 4/1
TR3 (1955-1957)
  • Use: Normal
  • Capacity 0,8 liter (Mechanical transmission)
  • Capacity 0,8 liter (Overdrive unit)
  • Check 9600 km/ 6000 miles
  • Change 19200 km/ 12000 miles
  • Code: 4/1

Additional Notes

  • Triumph TR3 models produced between 1955 and 1962 list a manual transmission fluid capacity of 0.8 liter for the mechanical gearbox and a separate 0.8 liter capacity for the overdrive unit, indicating two distinct fill points within the drivetrain.
  • The TR3, TR3A, TR3B, and TR4 specifications share an identical service pattern: a fluid check every 9600 km (6000 miles) and a full change every 19200 km (12000 miles), reflecting a consistent maintenance schedule across early production years.
  • Starting with the TR4A (1965-1967), a change interval is no longer listed separately, and only a check interval of 20000 km (12000 miles) appears, using a mileage figure that carries forward into later models despite the metric value increasing.
  • The TR5 PI (1967-1968) and TR6 PI (1969-1976) share a capacity range of 1.1 to 2 liters, a wider figure than earlier TR models, corresponding to the fuel-injected six-cylinder engine layout introduced with the TR5 PI.
  • Both TR5 PI and TR6 PI carry a check interval of 20000 km (12000 miles), extending the maintenance spacing established with the TR4A rather than reverting to the shorter 9600 km interval used in TR3 and TR4 variants.
  • The TR7 (1974-1979) lists a reduced capacity of 1.1 liter alongside a shorter check interval of 10000 km, a tighter figure than the 20000 km interval applied to the TR4A through TR6 PI.
  • Later TR7 production (1980-1982) retains the same 1.1 liter capacity but shifts to a 20000 km (12000 miles) check interval, aligning with the longer spacing used in mid-1960s and 1970s six-cylinder models rather than the shorter interval of earlier TR7 years.
  • The TR8 (1978-1980) and TR8 EFI (1980-1981) both specify a capacity of 1.5 liter, the largest fluid volume figure among the listed transmission specifications, with a check interval of 10000 km matching the shorter schedule used for the original TR7.

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