2024 Kenworth T680 Oil Capacity & Filter Guide

Quick Answer

The 2024 Kenworth T680 oil capacity depends on the engine. Common options include 40-44 quarts for the PACCAR MX-13 engine. Always verify with your owner's manual or an authorized Kenworth dealer.

• Oil Capacity: Varies by engine (e.g., PACCAR MX-13: 40-44 quarts / 37.9-41.6 Liters)
• Recommended Weight: Consult owner's manual; typically SAE 10W-30 or 5W-30 for modern heavy-duty diesels, also dependent on ambient temperature.
• Oil Spec: API CK-4 or FA-4, depending on the engine and manufacturer recommendations. Always refer to your owner's manual.
• Oil Filter OEM Part Number (PACCAR MX-13): Consult dealer, as part numbers can vary slightly by specific engine configuration.
• Oil Filter Aftermarket Cross-References (PACCAR MX-13, examples typically for OE P/N 2102002PE):
  • Fram: HPF62400 (confirm fitment)
  • Wix: 57900 (confirm fitment)
  • Mobil 1: M1C-201 (confirm fitment)

Capacity by Engine Option

(Note: Always consult your owner's manual for the most accurate and up-to-date information for your specific vehicle configuration.)

Oil Change Interval

The oil change interval for a 2024 Kenworth T680 largely depends on the engine, duty cycle, and oil analysis results.

• Normal Duty: Typically 35,000 to 75,000 miles or 500-800 engine hours, or 12 months, whichever comes first. Many modern engines utilize Oil Life Monitors (OLM) that can extend or shorten this interval.
• Severe Duty: This includes applications like frequent idling, short trips, extreme temperatures, or sustained heavy loads. Intervals may be shortened to 20,000-30,000 miles or 250-400 engine hours. It is highly recommended to implement an oil analysis program for severe duty applications to optimize drain intervals and monitor engine health.

Drain Plug Torque

For the PACCAR MX-13 engine, the main oil pan drain plug torque specification is typically around 45-55 lb-ft (61-75 Nm). Always refer to the official Kenworth service manual or engine manufacturer specifications for the exact torque value for your specific engine model. Replace the drain plug crush washer (if equipped) with a new one during every oil change to ensure a leak-free seal.

How to Change the Oil (General Steps)

1. Safely park the truck on a level surface, engage the parking brake, and chock the wheels.
2. Run the engine to bring the oil to operating temperature for better drainage.
3. Locate and place a suitable oil drain pan (large enough capacity!) under the oil pan drain plug.
4. Remove the drain plug and allow all the oil to drain completely. Inspext the old crush washer before discarding it.
5. Once drained, reinstall the drain plug with a new crush washer and torque to the manufacturer's specification.
6. Locate and remove the old oil filter(s) using a proper filter wrench. Be prepared for residual oil to drain.
7. Apply a thin film of new engine oil to the gasket of the new oil filter(s).
8. Install the new oil filter(s) and tighten according to manufacturer specifications (usually hand-tight plus a quarter to half turn, or specified torque).
9. Locate the oil fill cap, typically on the valve cover.
10. Add the recommended amount and type of new engine oil.
11. Start the engine and let it run for a few minutes to circulate the new oil and check for leaks, especially around the drain plug and filter(s).
12. Shut off the engine, wait a few minutes for the oil to settle, and then check the oil level using the dipstick. Add more oil if necessary to reach the "full" mark.
13. Properly dispose of the used oil and filters.

Common Issues / Tips (for this generation Kenworth T680)

• Adhere to OEM Specifications: Modern heavy-duty diesel engines, especially those with advanced emissions systems like the PACCAR MX-13 and Cummins X15, are highly sensitive to oil quality and specifications. Using the incorrect oil type (e.g., API FA-4 when CK-4 is required, or vice-versa) can lead to premature wear, DPF issues, and voided warranties. Always consult your owner's manual.
• Oil Analysis: For fleet operators or owner-operators running high mileage or severe duty, implementing a regular used oil analysis program is invaluable. It helps monitor engine health, detect potential issues early (like coolant leaks or fuel dilution), and optimize oil change intervals, potentially saving money and extending engine life.
• Filter Quality: Do not skimp on oil filter quality. High-quality filters are crucial for proper engine protection and maintaining oil cleanliness over extended drain intervals. Stick to OEM or reputable aftermarket brands that meet or exceed OEM specifications.
• Engine Control Module (ECM) Updates: Ensure your truck's ECM software is up-to-date. Manufacturers frequently release updates that can improve engine performance, fuel efficiency, and may sometimes affect recommended maintenance procedures or oil specifications.
• DPF and Oil Choice: Be aware that API FA-4 oils are specifically designed for improved fuel economy in certain newer engines and are formulated to be backward-compatible with older engines. However, do not use FA-4 if your engine is not specifically approved for it by the manufacturer, as it has different high-temperature-high-shear (HTHS) viscosity characteristics that may not provide adequate protection for engines not designed for it. Most Kenworth T680s with MX-13 or Cummins X15 engines from 2024 will likely specify CK-4 or FA-4 depending on the specific engine and model year variant.

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