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The 2013 GMC Sierra has a variety of engine options. The 4.3 liter V6 takes 4.5 US quarts of 5W-30 oil, while the 4.8 liter V8 requires 6 quarts of the same oil. The larger engines - the 5.3 liter V8, 6.0 liter V8, and 6.2 liter V8 - all need 6 quarts of 5W-30 oil too. For best maintenance, it is recommended to change the oil and filter every 7,500-10,000 miles or 12 months when using synthetic oil, and every 3,000-5,000 miles or 6 months with conventional oil. Synthetic oil offers improved lubrication, longer service intervals, and better performance in extreme weather conditions compared to conventional oil. Using a thinner viscosity oil in cold weather ensures better engine protection against friction and corrosion.
Can you tell me more about Dexos?
The manual recommends using 6 quarts of 5w-30 dexos oil, which includes the filter.
In 2013, the top choice for engine oil viscosity in the GMC Sierra 1500 is SAE 5W-30. GMC recommends using oils that meet the SAE classifications and have the API Certification Seal. For this vehicle, most engines will need 6.4 US quarts (6 liters) of oil, except for the 4.3L engine which requires 4.5 quarts (4.3 liters).
The manual states that a total of 6 quarts of 5W-30 dexos oil, which also accounts for the filter, is required.