How many quarts of oil does a Cummings engine hold?

The oil capacity of a Cummins engine varies depending on the specific model and size. For example, the popular 5.9L and 6.7L Cummins engines typically hold around 12 to 13 quarts of oil, including the oil filter. Larger models, such as the 8.3L or 6CT8.3, can hold significantly more, often upwards of 20 quarts. Always refer to the owner's manual for the exact specifications for your specific engine model.