Vauxhall Magnum
Automatic transmission fluid capacity & service interval
Vauxhall Magnum automatic transmission fluid capacity is 2,6 liters. Service intervals include checks every 10000 km or 3 months and changes every 24 months or 40000 hours. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Magnum 1.8 (1973-1978) |
|
| Magnum 2.3 (1973-1978) |
|
| Magnum 2.3 HP (1973-1978) |
|
Additional Notes
- The Vauxhall Magnum automatic transmission service fill capacity is 2.6 liters across all three available engine variants: the 1.8, 2.3, and 2.3 HP.
- A service fill figure represents the amount of fluid added during a routine drain-and-refill procedure, not the total system volume, which means the torque converter retains a portion of fluid during a standard service.
- All three configurations share an identical fluid check interval of every 10,000 km or 3 months, whichever comes first, under normal use conditions.
- The fluid change interval for all variants is set at 24 months or 40,000 hours under normal use, with both thresholds applying simultaneously rather than independently.
- The 40,000-hour figure within the change interval is notably high and reflects a time-based ceiling that, in practical terms, the calendar interval of 24 months would consistently be reached first.
- The uniformity of capacity and interval specifications across the 1.8, 2.3, and 2.3 HP variants from 1973-1978 indicates the same automatic transmission unit was fitted regardless of engine displacement or state of tune.