2024 International LT — Oil Capacity & Filter

The 2024 International LT with the Cummins X15 engine takes 40 quarts (37.9 liters) of engine oil with a filter change.

Quick Answer

• Oil Capacity: 40 quarts (37.9 liters)
• Recommended Oil Weight: 15W-40 (conventional or synthetic blend), 10W-30 (synthetic or synthetic blend) for improved cold starting and fuel economy, or 5W-40 (synthetic) for extreme cold weather.
• Oil Type Spec: API CK-4 or FA-4. Always refer to your owner's manual for the most up-to-date specifications and approvals from Cummins.
• Oil Filter:
  • OEM (Cummins): Consult dealer for specific part number based on X15 variant.
  • Aftermarket Cross-Reference:
    • Fram: Consult Fram heavy-duty catalog.
    • Wix: 57401 (common for Cummins X15, always verify fitment)
    • Mobil 1: Consult Mobil 1 heavy-duty catalog.

Capacity by Engine Option

The 2024 International LT primarily features the Cummins X15 engine. Oil capacity remains consistent across the various power ratings of the X15.

Oil Change Interval

Oil change intervals for the 2024 International LT with the Cummins X15 can vary significantly based on operating conditions, duty cycle, and oil analysis results. Always consult your vehicle's owner's manual and the Cummins engine manual for specific recommendations.

• Normal Duty: Typically, 40,000 to 50,000 miles or 800 hours, whichever comes first, when using API CK-4 or FA-4 approved oils and operating under ideal conditions.
• Severe Duty: Under severe operating conditions (e.g., frequent short hauls, excessive idling, dusty environments, extreme temperatures, heavy loads, or continuous stop-and-go driving), intervals may be reduced to 20,000 to 30,000 miles or 400-600 hours.

Note: Many fleets utilize oil analysis programs to extend drain intervals safely. Oil analysis can provide valuable insights into engine wear and oil condition, allowing for optimized maintenance schedules.

Drain Plug Torque

For the Cummins X15 engine in the 2024 International LT, the oil pan drain plug torque specification is typically 59 lb-ft (80 Nm). Always verify this specification with the Cummins service manual or your International dealer, as it can vary slightly. A new crush washer (if applicable to your specific oil pan design) should always be used to ensure a proper seal and prevent leaks.

How to Change the Oil

Changing the oil on a heavy-duty truck like the International LT requires proper equipment and safety precautions. If you are not experienced, it is recommended to have this service performed by a qualified technician.

1. Preparation: Park the truck on a level surface, engage the parking brake, and chock the wheels. Allow the engine to cool slightly, but still be warm, to facilitate oil flow.
2. Access: Locate the oil pan drain plug, usually on the underside of the engine. Place a large-capacity drain pan underneath. The X15 will drain a significant amount of oil.
3. Drain Oil: Carefully remove the drain plug and allow all the old oil to drain completely. Inspect the drain plug and replace the crush washer if necessary.
4. Replace Drain Plug: Reinstall the drain plug and torque it to the manufacturer's specification.
5. Replace Oil Filter: Locate the oil filter(s). Spin off the old filter(s) and properly dispose of them. Apply a thin film of clean engine oil to the gasket of the new filter(s). Hand-tighten the new filter(s) until the gasket contacts the mounting base, then tighten an additional 3/4 to 1 full turn (or as per filter manufacturer instructions). Do not overtighten.
6. Add New Oil: Remove the oil filler cap and carefully add the recommended amount and type of new engine oil. Use a funnel to prevent spills.
7. Check Level: Start the engine and let it run for a few minutes to circulate the new oil. Check for any leaks. Shut off the engine, wait a few minutes for the oil to settle, then check the oil level using the dipstick. Add more oil if necessary to bring it to the "full" mark.

Common Issues / Tips

• Oil Analysis: For heavy-duty applications like the International LT, implementing an oil analysis program is highly recommended. It can help optimize oil change intervals, detect potential engine issues early, and save on maintenance costs.
• Proper Disposal: Always dispose of used engine oil and filters responsibly at an authorized recycling center. Federal and local regulations prohibit improper disposal.
• Aftertreatment System: The Cummins X15 engine is equipped with an advanced aftertreatment system (DPF, SCR). Using the correct API CK-4 or FA-4 oil is critical for the longevity and proper function of these systems. Using incorrect oil can lead to premature clogging of the DPF and increased maintenance costs.
• Cold Weather Operation: If operating in extremely cold climates, consider using a 5W-40 synthetic oil or 10W-30 synthetic blend to aid in cold starts and reduce wear during warm-up.

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