Triumph GT6

Manual transmission fluid capacity & service interval

Triumph GT6 manual transmission fluid capacity ranges from 0,9 to 1,4 liters. Service intervals occur every 20000 km or 12000 miles. The data covers 3 configurations.

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

TypeSpecifications
GT6 MK3 (1970-1973)
  • Use: Normal
  • Capacity 0,9-1,4 liter
  • Check 20000 km/ 12000 miles
  • Code: 4/1
GT6 MK2 / GT6+ (1968-1970)
  • Use: Normal
  • Capacity 0,9-1,4 liter
  • Check 20000 km/ 12000 miles
  • Code: 4/1
GT6 MK1 (1966-1968)
  • Use: Normal
  • Capacity 0,9-1,4 liter
  • Check 20000 km/ 12000 miles
  • Code: 4/1

Additional Notes

  • The Triumph GT6 manual transmission fluid capacity is listed as a range of 0.9 to 1.4 liters across all three model variants covered by the specifications.
  • A capacity expressed as a range rather than a fixed value typically reflects the difference between a partial drain-and-refill service and a complete overhaul fill, where the lower figure represents a service top-up and the upper figure represents a full dry fill.
  • The GT6 MK1 (1966-1968), GT6 MK2 / GT6+ (1968-1970), and GT6 MK3 (1970-1973) all share an identical capacity range of 0.9 to 1.4 liters, with no variation across the production span covered.
  • The specified check interval for manual transmission fluid is 20,000 km or 12,000 miles, applied under normal use conditions across all three variants.
  • The interval figure of 20,000 km / 12,000 miles represents a fluid level inspection point rather than a mandatory drain-and-replace interval, as the specification uses the term "check" rather than "change."
  • All three variants carry the same normal use condition designation, meaning the 20,000 km / 12,000 miles check interval is not adjusted for any alternative operating condition within the listed specifications.

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