Join and earn up to $6 in bonus points with Exxon Mobil Rewards+ when you choose Synergy Supreme+ premium gas as a new member. Valid for enrollments from Feb. 1 to Apr. 30, 2019.
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    Better gas mileage

    Helps improve your vehicle’s fuel economy by reducing engine deposits.

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    Engine protection

    Helps protect intake valves and helps prevent rust in your vehicle’s fuel system.

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    Better responsiveness

    Helps prevent gunky build-up to rev up your engine’s performance.

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Fuel economy improvement is based on Synergy-branded gasoline compared to gasoline meeting minimum U.S. government standards. Actual benefits will vary based on factors such as vehicle type, driving style and gasoline previously used.