Sunoco · Maintenance myths debunked

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1. Sunoco

   Company knowledgeUpdated Oct 29, 2026

   Information from this source

   • Is premium gasoline worth it?

     “Premium can be worth using when your vehicle requires or recommends it. Vehicles designed for regular gasoline may see little benefit from switching to premium.”

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   • Can I switch between regular and premium?

     “Follow your vehicle manufacturer's recommendations. If your vehicle requires premium, continue using the recommended fuel grade.”

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   • Does premium improve fuel economy?

     “Not automatically. Some engines are designed to take advantage of higher octane, while others may see little or no benefit.”

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   • Does gasoline expire?

     “Gasoline can degrade over time, especially when stored improperly. Follow your vehicle or equipment manufacturer's recommendations for fuel that has been sitting unused.”

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   • What happens if I accidentally use the wrong octane?

     “The effect depends on the vehicle and fuel used. Consult your owner's manual for guidance, and have the vehicle checked if you notice persistent knocking or other unusual symptoms.”

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   • Is race fuel the same as premium fuel?

     “No. Race fuel is formulated for specific motorsports and performance applications, while pump gasoline is designed for everyday road vehicles.”

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   About Sunoco

   Sunoco is an American petroleum and petrochemical manufacturer.