2015 GMC Acadia Oil Capacity & Filter

The 2015 GMC Acadia with the 3.6L V6 engine takes 6 quarts (5.7 liters) of SAE 5W-30 engine oil.

Quick answer

• Oil Capacity: 6 quarts (5.7 liters)
• Recommended Oil Weight: SAE 5W-30
• Oil Type Specification: Dexos1 Gen2 (or API SN/SM if Dexos1 is unavailable)
• OEM Oil Filter: ACDelco PF48E (or PF48, check with dealer for latest)
• Aftermarket Oil Filter Cross-References:
  • Fram PH10575
  • Wix 57045
  • Mobil 1 M1-107A

Capacity by engine option

The 2015 GMC Acadia was offered with a single engine option:

Oil change interval

Normal Duty: General Motors recommends changing the oil in your 2015 GMC Acadia when the Oil Life Monitoring (OLM) system indicates, typically around 7,500 miles or 12 months, whichever comes first.

Severe Duty: If you operate your Acadia under severe conditions (e.g., frequent short trips, extreme temperatures, towing, dusty environments), your OLM may recommend an oil change sooner, potentially as early as 3,000-5,000 miles.

Always follow your vehicle's Oil Life Monitoring system and owner's manual for the most accurate oil change intervals.

Drain plug torque

The oil drain plug for the 2015 GMC Acadia's 3.6L V6 engine should be torqued to 18 lb-ft (25 Nm). It is highly recommended to replace the drain plug gasket or crush washer with a new one every time you perform an oil change to prevent leaks. The original drain plug gasket is typically a 12mm ID, 18mm OD, and 1.5mm thickness.

How to change the oil

1. Warm up the engine: Drive the vehicle for 5-10 minutes to bring the oil to operating temperature, ensuring it drains more easily.
2. Lift and secure: Safely lift the front of the vehicle using a jack and secure it with jack stands. Ensure the vehicle is level.
3. Locate and position: Place a drain pan directly underneath the oil drain plug, located on the bottom of the oil pan.
4. Drain the oil: Carefully remove the drain plug with a wrench (typically 15mm or 13mm, confirm with your vehicle). Allow all the old oil to drain completely. Inspect the drain plug and replace the crush washer.
5. Replace the filter: Locate the oil filter (typically on the front side of the engine, accessible from underneath). Use an oil filter wrench to remove it. Apply a thin coat of new oil to the gasket of the new filter before screwing it on hand-tight, then an additional 3/4 to 1 full turn.
6. Reinstall drain plug: Once the oil has finished draining, clean around the drain plug opening and reinstall the drain plug with the new crush washer. Torque to 18 lb-ft (25 Nm).
7. Refill with new oil: Lower the vehicle. Remove the oil cap and carefully pour in 6 quarts of new SAE 5W-30, Dexos1 Gen2 oil.
8. Check oil level: Start the engine and let it run for a minute to circulate the new oil. Shut off the engine, wait a few minutes, then check the oil level on the dipstick. Add more oil if necessary, but do not overfill.
9. Reset oil life monitor: Consult your owner's manual for instructions on resetting the Oil Life Monitoring system.

Common issues / tips

• Dexos1 Spec: General Motors introduced the Dexos1 specification for their gasoline engines to ensure optimal engine protection and fuel economy. Using an oil that meets or exceeds this specification is crucial for your Acadia.
• Oil Filter Access: The oil filter on the 3.6L V6 Acadia can be a bit tight to reach, especially from above. Accessing it from underneath after removing a splash shield can make the job easier.
• Plastic Undershield: Be aware that there may be a plastic undershield that needs to be removed to access the drain plug and oil filter. These are typically held on by a few bolts or clips.
• Oil Consumption: Some 3.6L V6 engines, especially those with higher mileage, can exhibit minor oil consumption. Regularly check your oil level between changes to ensure it stays within the proper range.
• O-ring on filter: Ensure the old oil filter gasket (o-ring) comes off with the old filter. Sometimes it can stick to the engine block, and installing a new filter over it will cause a leak.

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