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The 2015 GMC Terrain comes with either a 2.4 L 4Cylinder or a 3.6 L V6 engine that requires 5W-30 Synthetic Motor Oil for normal temperatures, or 0W-30 for temperatures below -20 F. The oil capacity is 5 quarts with a filter for the 2.4 L engine, and 6 quarts with a filter for the 3.6 L engine. Both models use a torque of 18 ft/lbs for the drain plug. Oil is essential for keeping the engine clean and parts well-lubricated to reduce friction. It's recommended to change the oil and filter every 7,500 miles or 6 months, whichever comes first, as oil doesn't last indefinitely. The cost of an oil change typically ranges between $30 and $40 for labor.
In the 2015 GMC Terrain, the amount of engine oil needed depends on the trim level because of the various engines used. The Denali, SL, SLE, and SLT models with a 4-cylinder engine require approximately 5 quarts of oil, while the Denali, SLE, and SLT models with a 6-cylinder engine need around 6 quarts of oil.