Diesel fuel quality information, ultra low sulfur

Diesel  

Quality Synergy™ diesel to get you where you’re going.
Our diesel fuels are blended to provide good ignition quality and are held to high quality standards for our consumers. Their low-temperature fluidity characteristics can also help keep vehicles moving in colder temperatures. Our Ultra Low Sulfur Diesel Fuel is made to meet the needs of the most demanding customers. This diesel fuel is formulated for use in any diesel-fueled vehicle on the road today.

Less energy, better fuel economy

Diesel fuel requires less energy to produce than gasoline. Because diesel has a higher energy density it provides better fuel economy compared to gasoline.

Reliable operability in cold temperatures

We blend base diesel fuel according to seasonal specifications. Refineries provide diesel fuel to geographically cold climates from lighter distillates and use additives to maintain cold weather fuel performance. Cloud point depressants, for example, suppress the temperature at which paraffin waxes form. In especially frigid climates, cold flow additives may be used to help prevent wax crystals from interfering with the engine’s fuel filter.

Have a question about diesel?

  • 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

    Exxon and Mobil SynergyTM gasoline

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

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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.

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