Riley 4
Automatic transmission fluid capacity & service interval
Riley 4 uses automatic transmission fluid with a capacity range of 2,98 to 6,57 liters. Service intervals consist of checks every 5000 km. The data covers 1 configuration.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 4/72 (1961-1969) |
|
Additional Notes
- The Riley 4/72 automatic transmission carries a service fill capacity of 6.57 liters, which represents the fluid volume held within the transmission housing itself, separate from the torque converter circuit.
- An additional 2.98 liters is attributed to the torque converter, meaning the total system volume across both the transmission and converter combined reaches approximately 9.55 liters when accounting for a full overhaul or dry fill.
- The distinction between the two capacity figures is relevant during service: a routine drain and refill will not recover the torque converter volume, so the 6.57-liter figure applies to most service fills while the converter figure becomes relevant only when the converter is also drained or replaced.
- The fluid level check interval for the Riley 4/72 automatic transmission is specified at every 5,000 km under normal use conditions, reflecting a relatively frequent monitoring schedule for the transmission fluid state.