2024 Peterbilt 579 Oil Capacity, Type, and Filter

The 2024 Peterbilt 579 requires an oil capacity of 44 quarts (41.6 liters) for the PACCAR MX-13 engine and 36 quarts (34.1 liters) for the Cummins X15 engine, including the filter. Adhering to the correct oil capacity and type is crucial for maintaining the performance and longevity of your heavy-duty truck.

Quick Answer

• Oil Capacity (PACCAR MX-13): 44 quarts / 41.6 liters (with filter)
• Oil Capacity (Cummins X15): 36 quarts / 34.1 liters (with filter)
• Recommended Oil Weight: 15W-40 or 10W-30, depending on climate
• Oil Specification: API CK-4
• Oil Filter (PACCAR MX-13 OEM): Peterbilt 2277134PE
• Oil Filter (Cummins X15 OEM): Cummins 5578336
• Aftermarket Cross-References (PACCAR):
  • Fram PH12064
  • Wix 57792XD
  • Mobil 1 M1-703A
• Aftermarket Cross-References (Cummins):
  • Fram PH11993
  • Wix 57746XD
  • Mobil 1 M1-901

Capacity by Engine Option

Oil Change Interval

• Normal Duty: 50,000 - 75,000 miles, depending on the engine and operating conditions. Always consult your owner's manual for the most accurate interval.
• Severe Duty: 25,000 - 45,000 miles. Severe duty includes frequent idling, heavy loads, and operation in dusty or extreme temperature environments.

Drain Plug Torque

The oil drain plug on both the PACCAR MX-13 and Cummins X15 engines should be torqued to 60 lb-ft (81 Nm). It is highly recommended to use a new crush washer with every oil change to prevent leaks. Consult your dealer for the specific crush washer part number.

How to Change the Oil

1. Warm up the engine to allow the oil to drain more easily.
2. Position a drain pan with a capacity of at least 15 gallons under the oil pan.
3. Remove the drain plug and allow the oil to drain completely.
4. Replace the oil filter, making sure to apply a light coat of new oil to the gasket.
5. Reinstall the drain plug with a new crush washer and torque it to the specified value.
6. Fill the engine with the correct amount and type of new oil.
7. Start the engine and let it run for a few minutes, then turn it off and check the oil level, adding more if necessary.

Common Issues / Tips

• The spin-on oil filters for these engines can be very tight. A heavy-duty filter wrench is recommended for removal.
• Always verify the correct oil specification (API CK-4). Using the wrong oil can lead to premature engine wear and potential damage to the emissions system.
• For the PACCAR MX-13, some technicians prefer to pre-fill the oil filter to ensure faster oil pressure buildup on startup. However, this is not a required step.
• When in doubt about any part number or procedure, always consult your local Peterbilt dealer for the most accurate and up-to-date information.

Need an oil change? Find a trusted shop on Repairius.