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Engine Oil

API Quality Marks

API's Engine Oil Quality Marks—the API Service Symbol "Donut" and Certification Mark "Starburst"—help consumers identify quality engine oils for their gasoline and diesel-powered vehicles.

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Recycling Used Oil Saves Energy

Cars are an indispensable fact of life for most of us. By operating and maintaining our vehicles responsibly, we can balance our desire for convenient transportation and a clean and healthy environment.

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