Diesel fuel quality information, ultra low sulfur


  • Truck at Pump

    Synergy Diesel Efficient fuel for fleets

    Synergy Diesel Efficient fuel also can help commercial vehicles improve their fuel economy and injector cleanliness, provide corrosion protection, and boost power and responsiveness.*

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Diesel that never compromises on quality

Synergy Diesel Efficient fuel is rolling out across the US throughout 2018 and 2019. Until it comes to your station, our classic Synergy™ Ultra Low Sulfur Diesel Fuel will be available. All of our diesel fuels are held to high quality standards.
  • Blended to provide good ignition quality
  • Low-temperature fluidity to keep your vehicle moving in colder temperatures
  • Blended according to seasonal specifications
  • developing quality gas that’s best for your car

    Quality fuels to get you where you're going

    Discover what steps we take to ensure the quality of our fuels.

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  • Our fuel types, gasoline, diesel and octane ratings

    The right fuel for your vehicle

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

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  • Tips to help you improve fuel efficiency

    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.

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  • New Synergy gasoline

    Synergy™ gasoline

    Learn about our Synergy gasoline, powered by 7 key ingredients and engineered to help improve fuel economy.

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*Applies to Exxon and Mobil Synergy Diesel Efficient-branded fuel compared to diesel fuel without detergent additive. 35 more miles assumes a 250 gallon tank with an average of 7 miles per gallon. Actual benefits will vary depending on factors such as vehicle/engine type, driving style and diesel fuel previously used.