Engine Oil
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All Temperatures SAE 5W-30
Above 0°F (-18°C) SAE 10W-30
GM Goodwrench motor oil or equivalent. Oils of the proper quality can be identified by looking for the "Starburst" symbol. The "Starburst" symbol indicates that the oil has been certified by the American Petroleum Institute (API), and is preferred for use in gasoline engines.