Minimum maintenance has been built into every QSK19 engine. For example: the articulated pistons last 30% longer until the first rebuild and give an additional 30% longer life after it. Even the oil seals have been engineered so they're never exposed to contaminants - for virtually leak-free operation.
Cummins QSK19 engines require an oil change every 250 hours.
For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.