2023 Chevrolet Silverado 3500HD Oil Capacity & Filter

The 2023 Chevrolet Silverado 3500HD with the 6.6L L8T gasoline engine takes 8 quarts (7.6 liters) of oil, while models equipped with the 6.6L L5P Duramax diesel engine require 10 quarts (9.5 liters) of oil.

Quick Answer

• 6.6L L8T Gasoline Engine:

  • Oil Capacity: 8 quarts (7.6 Liters)
  • Recommended Oil Weight: SAE 0W-20
  • Oil Type Spec: Dexos1 Gen3
  • OEM Oil Filter: Consult dealer
  • Aftermarket Oil Filter (Fram): Consult dealer
  • Aftermarket Oil Filter (Wix): Consult dealer
  • Aftermarket Oil Filter (Mobil 1): Consult dealer

• 6.6L L5P Duramax Diesel Engine:

  • Oil Capacity: 10 quarts (9.5 Liters)
  • Recommended Oil Weight: SAE 15W-40 (preferred) or SAE 5W-40 (alternative for cold weather)
  • Oil Type Spec: DexosD
  • OEM Oil Filter: Consult dealer
  • Aftermarket Oil Filter (Fram): Consult dealer
  • Aftermarket Oil Filter (Wix): Consult dealer
  • Aftermarket Oil Filter (Mobil 1): Consult dealer

Capacity by Engine Option

Oil Change Interval

For both gasoline and diesel engines, it’s crucial to adhere to the manufacturer’s recommended oil change intervals, which can vary based on driving conditions.

• Normal Duty: Under normal driving conditions, the Oil Life Monitoring (OLM) system will typically recommend an oil change around 7,500 miles or 12 months, whichever comes first. Always follow the OLM system displayed on your dashboard.
• Severe Duty: If you frequently operate your 2023 Silverado 3500HD under severe conditions (e.g., heavy towing, frequent short trips, extreme temperatures, dusty environments, or sustained idling), your OLM will likely reduce the interval, potentially calling for an oil change around 3,000-5,000 miles or 3-6 months. Pay close attention to the OLM and check your owner's manual for specific severe duty recommendations.

Drain Plug Torque

• 6.6L L8T Gasoline Engine: The oil drain plug torque specification is typically 25-30 lb-ft (34-41 Nm). Always use a new drain plug gasket or crush washer to ensure a proper seal and prevent leaks. Consult your owner's manual for the most accurate specification.
• 6.6L L5P Duramax Diesel Engine: The oil drain plug torque specification is typically 27 lb-ft (37 Nm). A new crush washer is highly recommended. Consult your owner's manual for the most accurate specification.

How to Change the Oil (General Steps)

1. Warm Up Engine: Run the engine for a few minutes to warm the oil, making it flow more easily.
2. Lift and Secure Vehicle: Safely lift the front of the truck using a jack and secure it with jack stands. Ensure the vehicle is level for accurate draining.
3. Locate Drain Plug: Place a suitable drain pan beneath the oil pan.
4. Remove Drain Plug: Carefully remove the drain plug and allow all the old oil to drain completely. Be cautious, as the oil will be hot.
5. Replace Drain Plug: Once drained, reinstall the drain plug with a new crush washer and torque to the specified setting.
6. Remove Old Oil Filter: Locate and remove the old oil filter. Be aware that some residual oil may spill.
7. Prepare New Oil Filter: Apply a thin film of new oil to the gasket of the new oil filter.
8. Install New Oil Filter: Hand-tighten the new oil filter until snug, then turn an additional 3/4 to 1 full turn, or as instructed on the filter.
9. Add New Oil: Refer to the "Quick Answer" section for the correct oil capacity and slowly add the recommended type and amount of new oil through the engine's filler cap.
10. Check Oil Level: Start the engine and let it run for a few minutes. Turn it off, wait for the oil to settle, then check the oil level with the dipstick. Add more oil if necessary.
11. Reset Oil Life Monitor: Follow the instructions in your owner's manual to reset the Oil Life Monitoring system.
12. Inspect for Leaks: Check around the drain plug and oil filter for any signs of leaks.

Common Issues / Tips

• Duramax Diesel Fuel Filter: For the 6.6L Duramax, remember that there are also fuel filters that need regular replacement. While not directly part of an oil change, they are crucial for engine longevity.
• Diesel Exhaust Fluid (DEF): If you have the Duramax diesel, ensure your DEF levels are maintained. DEF is essential for the emissions system.
• Check for Leaks Regularly: Heavy-duty trucks can be prone to leaks, especially after an oil change. Regularly inspect the area around the oil pan and filter.
• Use Quality Filters: Given the demands placed on a 3500HD, always opt for high-quality oil filters (OEM or reputable aftermarket brands) to ensure optimal filtration and engine protection.
• Consult Your Owner's Manual: For the most precise and up-to-date information on capacities, specifications, and procedures, always refer to your 2023 Chevrolet Silverado 3500HD owner's manual.

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