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The 3.6 liter V6 engine in the 2015 GMC Acadia requires 5.5 US quarts of 5W-30 oil. Oil and filter changes are recommended every 7,500-10,000 miles or 12 months with synthetic oil, and every 3,000-5,000 miles or 6 months with conventional oil. Synthetic oil offers advantages like improved lubrication for moving parts, longer time between service intervals, and better performance in extreme weather conditions. A thinner viscosity oil flows better in cold weather, protecting engine components from friction and corrosion. The cost for a lube and filter change typically ranges from $120 to $130 for materials and labor.
The engine oil capacity for the 2015 GMC Acadia is around 6 quarts.