The 2018 GMC Acadia uses Dexos1 Gen 2 certified motor oil with a viscosity of 0W-20. This specification generally covers both gasoline engines offered in that year, but you should verify the exact requirement in your owner's manual or with a GMC dealer.
The Acadia was offered with two gasoline engine options in 2018: a 2.5-liter inline-4 and a 3.6-liter V6. Both engines are designed to run on Dexos1 Gen 2 oil, typically at 0W-20 viscosity. Because oil requirements can vary by trim, climate, and production changes, consult the manual or your dealer to confirm the correct oil and service intervals for your VIN.
Oil specification for the 2018 Acadia
Below are the core oil guidelines that apply to the 2018 Acadia's gasoline engines. Always follow the exact specification listed in your manual or on the under-hood label.
2.5L I-4 engine
For the 2.5L engine, use Dexos1 Gen 2 certified motor oil with a viscosity of 0W-20. Synthetic or synthetic-blend formulations that meet Dexos1 Gen 2 standards are acceptable, with 0W-20 being the recommended viscosity.
- Oil type: Dexos1 Gen 2 0W-20
- Notes: Synthetic or synthetic-blend oils that meet Dexos1 Gen 2 are suitable; verify exact capacity and interval in the manual
Keep in mind that actual capacity and change intervals depend on driving conditions and model specifics. Always confirm the numbers from the owner's manual or a dealer.
3.6L V6 engine
The 3.6L V6 in the 2018 Acadia also uses Dexos1 Gen 2 0W-20 as the baseline specification. Use a Dexos1 Gen 2 0W-20 oil for proper lubrication and warranty compliance.
- Oil type: Dexos1 Gen 2 0W-20
- Notes: Follow GM's maintenance schedule; exact capacity and change interval vary by configuration
As with the 2.5L engine, the total oil capacity and replacement interval can differ based on the specific vehicle setup and driving conditions. Refer to the owner's manual for precise figures.
Summary
In short, the 2018 GMC Acadia requires Dexos1 Gen 2 certified motor oil with a viscosity of 0W-20 for its gasoline engines, regardless of whether you have the 2.5L I-4 or the 3.6L V6. Always verify the exact specification, capacity, and maintenance intervals in your owner's manual or with a GMC dealer to ensure optimal performance and warranty protection.