This page provides a detailed comparison of the specifications for the Caterpillar Diesel Seventy-Five and the Hart-Parr Old Reliable 30-60.
| Caterpillar Diesel Seventy-Five | Hart-Parr Old Reliable 30-60 | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Caterpillar | Hart-Parr |
| Engine Cooling Type | - | Liquid-cooled |
| Engine Fuel Type | Diesel | Kerosene |
| Engine Induction Type | - | Natural |
| Engine Cylinders | 6 | 2 |
| Engine Displacement Value | 1039 ci (17.0 L) | 2356 ci (38.6 L) |
| Engine Rated Rpm | 700 | 300 |
| Transmission | ||
| Transmission Type | - | Gear |
| Transmission Forward Gears | - | 1 |
| Transmission Reverse Gears | - | 1 |
| Dimensions | ||
| Length Value | - | 200 |
| Width Value | 78 | 106 |
| Operating Weight Value | - | 20100 lb (9117 kg) |
| Miscellaneous | ||
| Chassis | - | 4x2 |
| Drive Type | - | 2WD |
