Morris Marina, ADO28
Coolant capacity & service interval
Morris Marina and ADO28 models utilize coolant with a capacity range of 4,26 to 5,1 liters. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Marina 1.3 (1975-1980) |
|
| Marina 1.8 (1975-1978) |
|
| Marina 1.3 (1971-1975) |
|
| Marina 1.8 (1971-1975) |
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Additional Notes
- The Morris Marina 1.3 carries a coolant capacity of 4.26 liters across both the 1971-1975 and 1975-1980 variants, with the heater circuit adding volume beyond that base figure.
- The 4.26-liter figure represents the cooling system fill excluding the heater, meaning actual service fill volume rises once the heater circuit is included in the bleed and top-up procedure.
- The Marina 1.8 produced between 1971-1975 holds a notably larger cooling system capacity of 5.1 liters plus heater, compared to the 1.3 engine of the same period at 4.26 liters plus heater.
- A capacity reduction is recorded for the 1.8 engine between the two production periods: the 1971-1975 variant specifies 5.1 liters, while the 1975-1978 variant drops to 4.26 liters, matching the 1.3 engine figure.
- All four configurations carry a normal use condition designation, meaning the stated capacities apply under standard operating circumstances rather than severe-duty cycles.
- The parenthetical notation of "+ heater" across all rows indicates the heater matrix and associated hoses form a separate volume that is not absorbed into the base capacity figure, a common characteristic of closed cooling systems where the heater circuit branches off the main coolant loop.