2015 Chevrolet Silverado 2500HD Oil Capacity & Filter

The 2015 Chevrolet Silverado 2500HD's oil capacity varies by engine. The 6.0L LY6 V8 gasoline engine requires 6 quarts (5.7 liters) of oil, while the 6.6L LML Duramax diesel engine takes 10 quarts (9.5 liters).

Quick answer

6.0L LY6 V8 (Gasoline)

• Oil Capacity: 6 quarts (5.7 liters)
• Recommended Oil Weight: SAE 5W-30
• Oil Spec: Dexos1 Gen2 or newer (API SN Plus / SP)
• OEM Oil Filter: ACDelco PF48E
• Aftermarket Oil Filter Cross-References:
  • Fram PH10575
  • Wix 57060
  • Mobil 1 M1-113

6.6L LML Duramax V8 (Diesel)

• Oil Capacity: 10 quarts (9.5 liters)
• Recommended Oil Weight: SAE 15W-40 (preferred) or SAE 5W-40 (for cold weather below 0°F / -18°C)
• Oil Spec: API CJ-4 or API CK-4 (CK-4 is backward compatible and preferred)
• OEM Oil Filter: ACDelco PF2232
• Aftermarket Oil Filter Cross-References:
  • Fram CH10975
  • Wix 57202
  • Mobil 1 M1C-451A

Capacity by Engine Option

Engine	Oil Capacity (Quarts)	Oil Capacity (Liters)
6.0L LY6 V8 (Gas)	6	5.7
6.6L LML Duramax V8 (Diesel)	10	9.5

Oil Change Interval

6.0L LY6 V8 (Gasoline):

• Normal Duty: 7,500 miles or 12 months, whichever comes first.
• Severe Duty: 3,000-5,000 miles or 3-6 months, whichever comes first. Severe duty conditions include frequent short trips, extensive idling, towing, or dusty conditions.

6.6L LML Duramax V8 (Diesel):

• Normal Duty: 7,500 miles or 12 months, whichever comes first.
• Severe Duty: 5,000 miles or 6 months, whichever comes first. Severe duty for diesels includes sustained heavy towing, extensive idling, or operation in extremely dusty or cold environments.

Always follow your vehicle's Oil Life Monitoring (OLM) system recommendations, as it takes into account operating conditions to provide a more accurate service interval.

Drain Plug Torque

6.0L LY6 V8 (Gasoline)

• Drain Plug Torque: 18 lb-ft (24 Nm)
• Crush Washer: It is highly recommended to replace the crush washer (gasket) with each oil change to ensure a proper seal and prevent leaks.

6.6L LML Duramax V8 (Diesel)

• Drain Plug Torque: 50 lb-ft (68 Nm)
• Crush Washer: A new crush washer should always be used to prevent leaks.

How to change the oil

1. Warm Up Engine: Drive the truck for a few minutes to bring the oil to operating temperature, ensuring it drains more easily.
2. Lift and Secure: Safely lift the front of the truck using a jack and secure it with jack stands. Ensure the vehicle is level for accurate drainage.
3. Locate Drain Plug: Place a suitable drain pan under the engine's oil pan. Loosen and remove the drain plug with the appropriate wrench.
4. Drain Oil: Allow the old oil to drain completely. This can take 10-15 minutes.
5. Replace Drain Plug: Install a new crush washer on the drain plug and reinstall it into the oil pan. Torque to the specified value.
6. Remove Oil Filter: Position the drain pan under the oil filter. Use an oil filter wrench to loosen and remove the old filter.
7. Prepare New Filter: Apply a thin film of new engine oil to the gasket of the new oil filter.
8. Install New Filter: Hand-tighten the new oil filter until the gasket makes contact, then turn an additional ¾ to 1 full turn. Do not overtighten.
9. Add New Oil: Refer to the "Quick Answer" section for the correct oil capacity and type. Add the specified amount of fresh oil through the oil filler cap.
10. Check Level: Start the engine and let it run for a minute to circulate the oil. Turn off the engine, wait a few minutes for the oil to settle, then check the oil level with the dipstick. Add more oil if necessary.
11. Check for Leaks: Inspect the drain plug and oil filter for any signs of leaks.
12. Reset Oil Life Monitor: Follow the procedure in your owner's manual to reset the oil life monitor.

Common issues / tips

• Duramax Diesel Fuel Filter: For the 6.6L Duramax, it is crucial to also change the fuel filter every 22,500 miles or when indicated by the vehicle's maintenance system. This is vital for the longevity of the high-pressure fuel system.
• Cold Weather Operation (Diesel): If operating the 6.6L Duramax in consistently cold climates (below 0°F / -18°C), consider using SAE 5W-40 synthetic engine oil for better cold-starting performance.
• DEF System (Diesel): The 2015 Duramax uses Diesel Exhaust Fluid (DEF). While not directly related to oil, maintaining the DEF system is critical for emissions compliance and vehicle operation. Ensure you use only API-certified DEF.
• PCV System (Gasoline): On the 6.0L gasoline engine, a clogged PCV valve or hose can lead to increased oil consumption or internal engine pressure. Inspect and replace if necessary.
• Always Use Dexos1 (Gasoline): For the 6.0L gasoline engine, using oil that meets the Dexos1 specification (Gen2 or newer) is critical. This spec protects against Low-Speed Pre-Ignition (LSPI) and ensures proper lubrication for modern engines.
• Verify Oil Spec (Diesel): For the Duramax, using API CJ-4 or the newer, preferred CK-4 oil is essential for proper lubrication and emissions system compatibility.

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