"Sunoco fuels significantly exceed U.S. Environmental Protection Agency (EPA) gasoline detergency standards. All grades of Sunoco fuel contain the same level of detergent. In addition to government-mandated detergency tests, Sunoco fuels are subject to additional testing by an independent, third-party lab to further ensure their quality.
Sunoco fuels contain additives such as corrosion inhibitors and antioxidants, which help to ensure quality and promote a longer “shelf life”, which means the gasoline will last longer between uses."
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