2018 Chevrolet Silverado 2500HD Oil Capacity & Filter

The 2018 Chevrolet Silverado 2500HD takes 6.0 quarts (5.7 liters) for its 6.0L V8 gasoline engine or 10.0 quarts (9.5 liters) for its 6.6L Duramax V8 turbo-diesel engine.

Quick Answer

Here are the essential specifications for an oil change on a 2018 Silverado 2500HD:

For the 6.0L V8 Vortec (Gasoline):

• Oil Capacity: 6.0 quarts (5.7 liters) with filter change.
• Recommended Oil Weight: SAE 5W-30
• Oil Specification: dexos1® Gen 2 (or API SN or newer).
• Oil Filter (ACDelco PF48E/PF48F):
  • Fram: PH10060
  • Wix: WL10255
  • Mobil 1: M1-113A

For the 6.6L V8 Duramax L5P (Turbo-Diesel):

• Oil Capacity: 10.0 quarts (9.5 liters) with filter change.
• Recommended Oil Weight: SAE 15W-40 (for temperatures above 0°F / -18°C) or SAE 5W-40 (for temperatures below 0°F / -18°C).
• Oil Specification: API CK-4
• Oil Filter (ACDelco PF2232):
  • Fram: CH11296
  • Wix: WL10090
  • Mobil 1: M1-403A

Capacity by Engine Option

Oil Change Interval

The 2018 Silverado utilizes an Oil Life Monitoring (OLM) system. The truck will display a "Change Engine Oil Soon" message when it's time for service. However, the interval can vary widely based on your driving habits.

• Normal Duty: For most drivers, the OLM will recommend an oil change every 7,500 to 10,000 miles. This assumes a mix of city and highway driving under moderate loads and temperatures.
• Severe Duty: If you frequently tow heavy loads, operate in extreme temperatures (hot or cold), idle for long periods, or drive in dusty, off-road conditions, you should change the oil more frequently, typically every 3,000 to 5,000 miles. For diesel models under heavy use, adhering to the severe duty schedule is critical for engine longevity. Do not exceed one year between oil changes, regardless of mileage.

Drain Plug Torque

Properly tightening the oil drain plug is crucial to prevent leaks.

• Drain Plug Torque: 18 lb-ft (25 Nm) for both gasoline and diesel engines.
• Crush Washer: It is best practice to replace the drain plug gasket at every oil change to ensure a perfect seal. Consult your dealer for the specific part number.

How to Change the Oil (Simplified)

1. Run the engine for a few minutes to warm the oil, then shut it off.
2. Place a drain pan under the oil pan, remove the drain plug, and let the old oil drain completely.
3. While the oil is draining, locate and remove the oil filter. Be prepared for some oil spillage.
4. Wipe the filter mounting surface clean and apply a thin layer of new oil to the gasket of the new filter.
5. Install the new filter and tighten it by hand until it is snug, then give it an additional three-quarters of a turn.
6. Reinstall the drain plug with a new crush washer and torque it to 18 lb-ft.
7. Fill the engine with the correct amount and type of new oil.
8. Start the engine, let it run for 30 seconds to circulate the new oil, then shut it off. Wait a minute and re-check the dipstick, adding more oil if necessary to reach the "Full" mark.
9. Reset the Oil Life Monitor through the instrument cluster menu.

Common Issues / Tips

• Correct Oil for L5P Duramax: Using the correct API CK-4 specification oil is mandatory for the 6.6L Duramax L5P engine. Using older spec oil (like CJ-4) can lead to premature wear on emission system components.
• Gas vs. Diesel Filters: The oil filters for the gas and diesel engines are completely different and not interchangeable. The diesel uses a larger cartridge-style filter, while the gas engine uses a spin-on can-style filter.
• Access: On 4x4 models, the front differential can make accessing the oil filter on the 6.0L gas engine a bit tight. A good quality filter wrench is recommended.
• Resetting the OLM: Always remember to reset the Oil Life Monitor after a change. Failure to do so will result in inaccurate change reminders.

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