Triumph TR series

Automatic transmission fluid capacity & service interval

Triumph TR series automatic transmission fluid capacity ranges from 5,4 to 6,96 liters. Service intervals include checks at 1000 km, 10000 km, and 20000 km/12000 miles, with a change interval of 40000 km. The data covers 4 configurations.

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

TypeSpecifications
TR7 (1980-1982)
  • Use: Normal
  • Capacity 5,4 liter (+ oil cooler)
  • Check 20000 km/ 12000 miles
  • Code: Borg Warner 65 3/1
TR8, EFI (1980-1981)
  • Use: Normal
  • Capacity 6,96 liter (+ oil cooler)
  • Check 1000 km
  • Change 40000 km
  • Code: Borg Warner 65 3/1
TR8 (1978-1980)
  • Use: Normal
  • Capacity 6,96 liter (+ oil cooler)
  • Check 1000 km
  • Change 40000 km
  • Code: Borg Warner 65 3/1
TR7 (1974-1979)
  • Use: Normal
  • Capacity 5,4 liter (+ oil cooler)
  • Check 10000 km
  • Code: Borg Warner 65 3/1

Additional Notes

  • The Triumph TR7 (1974-1979) and TR7 (1980-1982) both carry an automatic transmission fluid capacity of 5.4 liters, with the notation that an oil cooler adds to the total fill volume beyond that figure.
  • The TR8 and TR8 EFI configurations hold a notably larger automatic transmission fluid capacity of 6.96 liters plus oil cooler volume, reflecting the greater fluid demands of the V8 drivetrain compared to the TR7.
  • The 5.4-liter capacity listed for both TR7 generations represents a service fill value, as the parenthetical oil cooler notation signals that a full overhaul or drain-and-refill involving the cooler circuit would require additional fluid beyond the stated figure.
  • The TR7 (1974-1979) specifies a check interval of 10,000 km under normal use conditions, while the TR7 (1980-1982) doubles that interval to 20,000 km (12,000 miles) for the same check procedure under the same use conditions.
  • The TR8 (1978-1980) and TR8 EFI (1980-1981) share an initial check interval of 1,000 km under normal use, which is a break-in-style early inspection interval intended to verify fluid condition shortly after the transmission enters service.
  • Both TR8 configurations pair the 1,000 km check interval with a change interval of 40,000 km under normal use conditions, establishing a two-stage service schedule that separates the early inspection from the full fluid replacement interval.
  • No change interval is listed for either TR7 generation, whereas both TR8 configurations carry an explicit 40,000 km change interval, representing a structural difference in the service schedules between the two model lines.
  • The TR8 EFI (1980-1981) shares identical automatic transmission fluid capacity and service interval specifications with the non-EFI TR8 (1978-1980), indicating the fuel delivery system variation did not alter the transmission fluid requirements.

Other Systems