2018 Chevrolet Tahoe Oil Capacity & Filter

The 2018 Chevrolet Tahoe takes 8 quarts (7.6 liters) of 0W-20 engine oil for all available engines.

Quick Answer

• Oil Capacity: 8 quarts (7.6 liters)
• Recommended Oil Weight: SAE 0W-20
• Oil Specification: Dexos1 Gen2 (or newer, e.g., Dexos1 Gen3) / API SP
• Oil Filter (OEM): ACDelco PF63F
• Oil Filter (Aftermarket Cross-Reference):
  • Fram: PH10575
  • Wix: 57060
  • Mobil 1: M1-113A

Capacity by Engine Option

For the 2018 Chevrolet Tahoe, there was primarily one engine option available to the general public, and it shares the same oil capacity.

Oil Change Interval

Chevrolet recommends adhering to the Oil Life Monitoring (OLM) system in your 2018 Tahoe. This system calculates the oil change interval based on various factors like engine revolutions, operating temperature, and driving conditions. Generally, you can expect the OLM to recommend an oil change between 7,500 and 10,000 miles (12,000 – 16,000 km) under normal driving conditions, or approximately once a year, whichever comes first.

Severe Duty Conditions: If your driving often involves severe conditions such as:

• Frequent short trips (less than 5 miles/8 km in cold weather or 10 miles/16 km in normal temperatures).
• Idling for extended periods.
• Driving in dusty conditions.
• Towing a trailer or carrying heavy loads frequently.
• Extreme hot or cold weather operation.

The OLM will likely suggest an earlier oil change, potentially around 3,000-5,000 miles (4,800 – 8,000 km). Always rely on your vehicle's OLM to determine the optimal oil change time.

Drain Plug Torque

The oil drain plug for the 2018 Chevrolet Tahoe should be torqued to 18 lb-ft (24 Nm). Always use a new crush washer with each oil change to ensure a proper seal and prevent leaks. The OEM crush washer is typically aluminum or composite.

How to Change the Oil

Changing the oil on your 2018 Chevrolet Tahoe is a straightforward process:

1. Preparation: Ensure the engine is warm but not hot. Park on a level surface and engage the parking brake. Block the wheels and safely lift the front of the vehicle using a jack and jack stands.
2. Drain Oil: Place a suitable drain pan beneath the oil pan. Locate the oil drain plug, remove it using an appropriately sized wrench, and allow the old oil to drain completely. Be mindful of hot oil.
3. Replace Drain Plug: Once all oil has drained, clean the drain plug and install a new crush washer. Reinstall the drain plug and torque it to 18 lb-ft (24 Nm).
4. Replace Oil Filter: Position your drain pan under the oil filter. Use an oil filter wrench to loosen and remove the old filter. Apply a thin coat of new oil to the rubber gasket of the new filter. Screw on the new filter by hand until snug, then tighten an additional 3/4 to 1 full turn (or as per filter manufacturer's instructions).
5. Refill Oil: Lower the vehicle. Locate the oil fill cap on the engine. Slowly add 8 quarts of new 0W-20 Dexos1 Gen2 (or newer) engine oil. Wait a few minutes for the oil to settle.
6. Check Level & Reset OLM: Check the oil level using the dipstick. Start the engine and let it run for a minute, then shut it off and recheck the level, adding more oil if necessary. Reset the Oil Life Monitoring system in your vehicle's infotainment or instrument cluster menu.
7. Inspect for Leaks: Visually inspect the drain plug and oil filter area for any leaks after running the engine. Properly dispose of the used oil at an approved recycling center.

Common Issues / Tips

• Oil Consumption (Normal): It is normal for some engines, particularly V8s like those in the Tahoe, to consume a small amount of oil between changes. Regularly check your oil level and top off if necessary.
• Active Fuel Management (AFM)/Dynamic Fuel Management (DFM): The 5.3L V8 engine in the 2018 Tahoe utilizes AFM (also known as cylinder deactivation). Maintaining the correct oil level and using the specified Dexos1 oil is crucial for the proper operation and longevity of AFM lifters. Neglecting oil changes or using incorrect oil can exacerbate lifter-related issues.
• PCV Valve: A clogged PCV (Positive Crankcase Ventilation) valve can contribute to increased oil consumption and other engine issues. It's a good idea to inspect and potentially replace this inexpensive part periodically.
• Torque Wrench Use: Using a torque wrench for both the drain plug and the oil filter is highly recommended to prevent overtightening (which can strip threads or damage the oil pan) or undertightening (leading to leaks).
• Genuine Parts: While aftermarket filters are available and often high-quality, using genuine ACDelco parts ensures compatibility and adherence to GM's engineering specifications.

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