Vauxhall Magnum
Coolant capacity & service interval
The Vauxhall Magnum uses coolant with a capacity of 8 liters including the heater. The data covers 3 configurations of this model.
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 coolant system capacity is listed at 8 liters across all three engine variants covered in the 1973-1978 specifications.
- The 8-liter figure represents the cooling system volume and does not include the heater circuit, which adds additional fluid volume beyond the stated capacity.
- The 1.8, 2.3, and 2.3 HP engine variants share an identical base coolant capacity of 8 liters, indicating no displacement-related difference in cooling system volume across the range.
- All three configurations carry a normal use condition designation, meaning the 8-liter capacity figure applies under standard operating conditions rather than severe or first-change-only service scenarios.