New Synergy Supreme+™ premium gasoline is our best fuel ever  

Exxon Mobil Synergy Supreme+ keeps your engine 2X cleaner for better gas mileage.

With new Synergy Supreme+ premium gasoline, you can keep your engine 2X cleaner for better gas mileage. That means it’s not just our best fuel ever – it could even be your engine’s favorite fuel ever.

Synergy Supreme+ premium gas generally has an octane level of 93, but may be blended and sold at an octane level of 91 or 92 in certain areas of the US. Higher-octane gasoline provides improved performance in vehicles designed to run on premium gasoline.


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  • Spray logo

    Go from clogged to clean for better gas mileage

    Our new detergent gives Synergy Supreme+ premium gas its engine-cleaning superpowers. Here’s how it works:

    • Deposits accumulate on port fuel injection (PFI) intake valves and gasoline direct injection (GDI) fuel injectors
    • Our new Synergy Supreme+ premium gas contains significantly more cleaning agents than federal standards require leading to outstanding cleanliness
    • It keeps your engine clean by reducing deposit buildup
    • It even cleans up your engine by removing existing deposits left behind by gasoline that meets minimum government standards††

  • Shield logo

    Fight friction for next-level engine protection

    We added a friction modifier to Synergy Supreme+ premium gas to provide you with our best engine protection ever. Here’s how it works:

    • Our friction modifier reduces wear and tear by 30%‡‡
    • It prevents metal surfaces from rubbing together, which can lead to improved performance and fuel economy
    • You get a gasoline that protects vital engine parts

    Learn more about Synergy™ fuels

  • 2X points with ExxonMobil Rewards+ premium.

    Exxon Mobil Rewards+ Premium™ status§

    Get 2X points on Synergy Supreme+™ premium gasoline – plus special offers.

    Details and registration
  • New Synergy gasoline

    Synergy™ gasoline

    Learn more about our Synergy gasoline, engineered to help you get better gas mileage.§§

    Discover our gasoline
  • Sign up. Fill up. Earn $0.15/gal. in points.

    Get 15¢/gal. in points*

    Earn 15¢/gal. in points on your first three fill-ups after you register for the Exxon Mobil Rewards+™ program. New members only.

    Join for free
  • 12 cents of gas

    Earn on every gallon, every day

    Get 12¢ off every gallon of Synergy™ gasoline for the first 2 months after account open date when you apply for an ExxonMobil™ Smart Card by 12/31/19. Or apply through the Speedpass+™ app to get 50¢ off every gallon for the first month after account open date.

    Apply online

Based on comparison of Synergy Supreme+ gas compared to Synergy regular gas in port fuel injected engines. Actual benefits are based on continuous use and may vary depending on vehicle type, driving style, and gasoline previously used. Concentration and availability of our proprietary additive package may vary based on factors beyond our control.

††Based on comparison of Synergy Supreme+ premium gas to gasoline that meets minimum government standards. Actual benefits are based on continuous use and may vary depending on vehicle type, driving style, and gasoline previously used. Concentration and availability of our proprietary additive package may vary based upon factors beyond our control.

‡‡Based on Synergy Supreme+ gas compared to gasoline meeting minimum government standards. Wear reduction was measured by an industry standard lubricant test. Actual benefits are based on continuous use and may vary depending on vehicle type, driving style, and gasoline previously used. Concentration and availability of our proprietary additive package may vary based on factors beyond our control.

§Exxon Mobil Rewards+ Premium Status (“Premium Status”) is achieved by making three (3) “Qualifying Purchases” in a calendar month. A Qualifying Purchase is defined as a purchase of 8 gallons or more of Synergy Supreme+ fuel with the Exxon Mobil Rewards+ program. You must present and use your Exxon Mobil Rewards+ card loyalty identifier prior to making a Qualifying Purchase at participating locations. Exxon Mobil Rewards+ Premium Status Benefits (“Benefits”) begin after Premium Status is earned. You must complete three Qualifying Purchases each calendar month to maintain your Benefits. In the event that Premium Status is not maintained in the following month, you have a grace period of three consecutive months starting from the end of the month in which Premium Status was last earned before your Premium Status benefits expire. Benefits include earning double base points (for a total of 6 points per gallon) on all Synergy Supreme+ purchases after earning and while maintaining Premium Status. You will also be eligible for various Premium Status offers and experiences that are available to Exxon Mobil Rewards+ Premium Status members. To view full Exxon Mobil Rewards+ terms, please click here. Your Premium Status is non-transferrable and does not preclude you from using other Exxon Mobil Rewards+ offers, unless specified. The Exxon Mobil Rewards+ Program Terms and Conditions apply. 

§§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.

*Exxon Mobil Rewards+ is a rewards program available at participating Exxon and Mobil service stations. Terms and conditions apply. You must fully enroll to become a member and use points. Download the Speedpass+ app or see exxonmobilrewardsplus.com to complete registration. Points have no monetary value and expire after 1 year. You must fully enroll in Exxon Mobil Rewards+ between July 1, 2019 and October 31, 2019 in order to be eligible. For your next three fill-ups using your rewards card, you will earn 15 points per gallon purchased in addition to any other point per gallon offers.

New accounts only. Subject to credit approval. Rebates will be reflected as a statement credit on your billing statement with qualifying purchases. Account must be open and in good standing to qualify. Terms and Conditions of the ExxonMobil Smart Card Rebate Program apply.

Download of the Speedpass+™ app is required. Terms and Conditions of the ExxonMobil Smart Card Rebate Program apply. 

© 2019 ExxonMobil. All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries.


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