2021 GMC Acadia Oil Capacity & Filter Guide

Quick answer

The 2021 GMC Acadia takes 5 quarts (4.7 liters) of engine oil for the 2.0L LSY I4 engine, and 6 quarts (5.7 liters) for the 3.6L LGX V6 engine.

Here’s a quick reference for your 2021 Acadia:

• Oil Capacity:
  • 2.0L LSY I4: 5 quarts (4.7 L)
  • 3.6L LGX V6: 6 quarts (5.7 L)
• Recommended Oil Weight: 0W-20 for both engines.
• Oil Specification: Dexos1 Gen3 or API SP (Full Synthetic Recommended)
• Oil Filter Part Numbers:
  • 2.0L LSY I4:
    • OEM: AC Delco UPF64R
    • Fram: CH12906
    • Wix: WL10010
  • 3.6L LGX V6:
    • OEM: AC Delco PF64
    • Fram: PH10575
    • Wix: 57060

Capacity by Engine Option

The 2021 GMC Acadia was available with two engine options, each with a different oil capacity:

Oil Change Interval

GMC recommends following the Oil Life Monitoring (OLM) system, which can extend or shorten oil change intervals based on driving conditions. However, general guidelines are:

• Normal Duty: Typically every 7,500 – 10,000 miles or 12 months, whichever comes first.
• Severe Duty: If your driving involves frequent short trips, extreme temperatures, towing, or extensive idling, the OLM may indicate a change sooner, potentially every 3,000 – 5,000 miles. Always consult your owner's manual for precise recommendations and follow the vehicle's OLM.

Drain Plug Torque

The oil drain plug for both the 2.0L and 3.6L engines on the 2021 GMC Acadia should be torqued to 18 lb-ft (25 Nm). It is highly recommended to replace the drain plug crush washer with a new one every oil change to prevent leaks. The crush washer helps create a tight seal and deforms to fill any imperfections.

How to Change the Oil

Changing the oil on your 2021 GMC Acadia is a straightforward process. Here's a simplified step-by-step guide:

1. Gather your supplies: Correct oil, oil filter, drain pan, wrench for the drain plug, oil filter wrench, funnel, and jack/jack stands if needed.
2. Warm up the engine: Drive the vehicle for a few minutes to bring the oil to operating temperature, which helps it drain more easily.
3. Lift and secure: Safely lift the front of the vehicle using a jack and secure it with jack stands. Always use proper safety precautions.
4. Locate drain plug: Place the drain pan underneath the oil pan. Remove the drain plug with a wrench and allow the old oil to drain completely.
5. Replace drain plug: Once drained, reinstall the drain plug with a new crush washer and torque to 18 lb-ft (25 Nm).
6. Remove old filter: Locate the oil filter (it varies by engine) and remove it using an oil filter wrench. Be prepared for a small amount of oil to spill.
7. Install new filter: Apply a thin film of new oil to the rubber gasket of the new oil filter. Screw it on hand-tight until the gasket makes contact, then tighten an additional 3/4 to 1 full turn. Consult your oil filter's instructions for exact tightening.
8. Add new oil: Lower the vehicle. Remove the oil cap and carefully pour in the recommended amount and type of new oil using a funnel.
9. Check oil level: Start the engine and let it run for a minute to circulate the new oil. Turn off the engine, wait a few minutes, and then check the oil level with the dipstick. Add more oil if necessary.
10. Reset oil life monitor: Refer to your owner's manual for instructions on how to reset the oil life monitoring system.

Common Issues / Tips

• 2.0L LSY Engine Specifics: This engine is a turbocharged direct-injection unit. Using the correct Dexos1 Gen3 oil is crucial for protecting the turbocharger and preventing low-speed pre-ignition (LSPI). Ensure you use a high-quality full synthetic oil to maximize engine life and performance.
• Dipstick Check: Always check your oil on a level surface after the engine has been off for several minutes to allow oil to drain back into the pan for an accurate reading.
• Oil Filter Location: The 2.0L LSY engine typically uses a cartridge-style oil filter located under a cap on top of the engine, while the 3.6L LGX V6 uses a spin-on filter located at the bottom of the engine near the front.
• PCV Valve Issues: Some GM engines of this era can experience PCV valve issues leading to increased oil consumption or even pressure build-up. While not universally reported for Acadia, it's something to be aware of if you notice unusual oil consumption.
• Engine Codes: If you perform your own oil change, ensure you reset the Oil Life Monitoring system to avoid confusion and potential