* Driving conditions: Severe conditions (frequent stop-and-go driving, towing heavy loads, extreme temperatures) will necessitate more frequent changes.
* Oil quality: Using a higher-quality oil might allow for slightly longer intervals, but always stick to the manufacturer's recommendations for oil type and viscosity.
* Oil analysis: Having your oil analyzed can provide a more precise indication of its condition and help you determine the optimal change interval.
Many owners of 7.3L Power Strokes opt for shorter intervals, such as 5,000-7,500 miles, especially if they frequently tow or operate under harsh conditions. It's generally better to err on the side of caution and change the oil more frequently than less frequently to ensure the long life of your engine. Always consult your owner's manual for the most definitive information for your specific vehicle.