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What type of oil should be used for a 2018 GMC Sierra?
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2 answers
★ Top Answer
The 2018 GMC Sierra should use 5w-30 oil for optimal performance. It is crucial to use high-quality oil to ensure the engine functions smoothly. Over time, there may be issues with the oil, sometimes indicated by a knocking noise from the engine or a burning smell. Using bad oil can lead to the engine failing to work properly. It is important to address these signs immediately to avoid any potential hazards, such as the possibility of the car exploding. Neglecting oil maintenance can also result in poor gas mileage. It is recommended to replace the oil every 5,000 to 10,000 miles to prevent engine problems from arising.
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For the 2018 GMC Sierras with a 5.3 liter engine, including the Sierra crew cab SB, SLT (crew cab and double cab) SB, SLE crew cab SB, and the Denali (with a 5.8FT SB or a 6.6FT SB), they require 0w-20 oil. The 4.3 liter trucks, such as the Sierra (double cab or regular cab) SB, Sierra regular cab LB, Sierra Crew cab SB, SLE double cab SB, SLE regular cab (short and long bed), and SLE crew cab SB, all use 5w-30 oil.
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