Triumph Bonneville
Manual transmission fluid capacity & service interval
Triumph Bonneville manual transmission fluid capacity is 0,5 liter. Service intervals are 4800 km or 24 months. Data covers 1 configuration.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Bonneville T 140 (1978-1989) |
|
Additional Notes
- The Triumph Bonneville T140 manual transmission holds 0.5 liter of fluid, a relatively small volume consistent with the compact unit design typical of British parallel-twin motorcycles of that era.
- A 0.5 liter capacity figure represents a service fill quantity, meaning the amount used during a routine drain and refill rather than a full overhaul rebuild where additional passages and cavities may retain fluid.
- The change interval for the Bonneville T140 manual transmission fluid is set at 4800 km or 24 months, whichever comes first, under normal use conditions.
- The 24-month time-based interval runs alongside the 4800 km distance threshold, meaning a machine with low annual mileage would still reach a fluid change point at the two-year mark regardless of distance traveled.
- Normal use conditions govern the 4800 km / 24-month interval, meaning the specification applies to typical riding patterns without the accelerated wear factors associated with severe use classifications.
- The single specification row covering 1978-1989 indicates a consistent transmission fluid capacity and change interval applied uniformly across the full production span of the Bonneville T140 without variation between model years within that range.