Ranger (GM) Ranger A
Coolant capacity & service interval
The Ranger A by GM uses coolant with capacities ranging from 5.6 to 6.1 liters depending on transmission type. The data covers 4 configurations of this model.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 1700 (1970-1972) |
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| 1900 (1970-1972) |
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| 2500 (1970-1972) |
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| 2500 GTS (1970-1972) |
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Additional Notes
- The GM Ranger A 1700 (1970-1972) carries a cooling system capacity of 5.9 liters with automatic transmission and 6.1 liters with manual transmission, making the manual transmission variant the largest coolant fill across all listed engine configurations.
- The 0.2-liter difference between automatic and manual transmission variants of the 1700 reflects how transmission type influences the total volume of coolant the system must hold, typically due to differences in heat exchanger routing or integrated transmission cooler circuits.
- The 1900, 2500, and 2500 GTS share identical cooling system capacities of 5.6 liters (automatic) and 5.7 liters (manual) across the 1970-1972 model years, despite representing distinct engine displacements.
- The 0.1-liter gap between automatic and manual transmission variants on the 1900, 2500, and 2500 GTS is notably smaller than the 0.2-liter gap seen on the 1700, indicating a tighter relationship between transmission type and coolant volume in those configurations.
- All four configurations list normal use conditions, meaning the stated capacities apply to standard operating environments rather than severe-duty or first-fill scenarios.
- The 1700 with automatic transmission holds 0.3 liters more coolant than the automatic transmission variants of the 1900, 2500, and 2500 GTS, a distinction that may reflect differences in engine block design or cooling jacket volume rather than displacement alone.