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Synergy Diesel Efficient™ fuel for light duty trucks and passenger vehicles

Bob Oakman is ready for commitment – to Synergy Diesel Efficient™ fuel. It’s fully formulated to help keep your engine cleaner for better diesel fuel economy.** Only available at select Exxon™ and Mobil™ stations, Synergy Diesel Efficient fuel has a unique formulation that helps to:

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    Increase fuel economy* — so you can go more miles on every tank

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    Enhance engine performance for improved power

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    Reduce emissions and burn cleaner

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    Protect your engine from dirty injectors

Get pumped at the pump

Synergy Diesel Efficient fuel for light-duty trucks and vehicles inspires legendary monster truck announcer Bob Oakman to amp up the oomph. Watch the video to find out how crazy he can get. Believe the hype.


Want more information on Synergy Diesel Efficient fuel?


  • New-member exclusive for Exxon Mobil rewards+. Join in app. Fill up one time. Earn $5!

    New member app bonus

    Use the Exxon Mobil Rewards+™ app to join our rewards program and pay for fuel, and you'll earn 50¢/gal on your next fill-up, up to 10 gallons – that's $5 in points!***

    See app details
  • our-fuels-splash

    The right fuel for your vehicle

    Get the most out of your engine, and your journey, with Exxon and Mobil Synergy™ gasoline and diesel.

    Learn more
  • wing mirror fuel tips

    Get more out of every trip

    Explore our comprehensive list of tips to help you improve fuel efficiency and get more out of every trip.

    Learn more
  • Synergy-Fuel-Technology

    Exxon and Mobil Synergy™ gasoline

    Learn more about our Synergy™ gasoline, engineered with 7 key ingredients to help you get better gas mileage.§§

    Learn more

*Applies to Exxon and Mobil Synergy Diesel Efficient branded fuel compared to diesel fuel without detergent additive, and assumes a 250 gallon tank and an average of 7 miles per gallon. Vehicle testing showed an average fuel economy improvement of 2 percent. Actual benefits will vary depending on factors such as vehicle/engine type, driving style and diesel fuel previously used.

**Claims apply to Exxon and Mobil Synergy Diesel Efficient-branded fuel compared to diesel fuel without detergent additive. Actual benefits will vary depending on factors such as vehicle/engine type, driving style and diesel fuel previously used.

*** Applies to a maximum 10-gallon fill-up. Offer valid only for new Exxon Mobil Rewards+ members. Valid through 12/31/2020.

§§Benefits are 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.

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