MG Magnette
Coolant capacity & service interval
MG Magnette coolant specifications cover a capacity range of 5.4 to 7.1 liters. Four configurations of the model are included in the data.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Magnette, Mk IV (1961-1969) |
|
| Magnette, Mk III (1959-1961) |
|
| Magnette, ZB (1956-1958) |
|
| Magnette, ZA (1953-1956) |
|
Additional Notes
- The MG Magnette ZA (1953-1956) and ZB (1956-1958) share an identical cooling system capacity of 6 liters, indicating no change to the cooling architecture between those two variants.
- The Magnette Mk III (1959-1961) carries the largest cooling system capacity across all four variants at 7.1 liters, a figure that reflects the volume of coolant required to fill the engine block, cylinder head passages, radiator, and associated hoses during a full service fill.
- The Magnette Mk IV (1961-1969) has a notably smaller cooling system capacity of 5.4 liters compared to the Mk III's 7.1 liters, representing a reduction of 1.7 liters between those two consecutive variants.
- All four variants list coolant capacity under a normal use condition, meaning the 6-liter, 7.1-liter, and 5.4-liter figures each apply to standard operating circumstances rather than a severe or first-change scenario.
- The 5.4-liter capacity of the Mk IV is also the smallest cooling system volume recorded across all Magnette variants in the specifications, sitting 0.6 liters below the 6-liter figure shared by the ZA and ZB.