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diesel car fuel


High quality 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.

Diesel is different from gasoline

Diesel and gasoline are both derived from crude oil, they work similarly, but are not interchangeable. Both fuels are normally injected under high temperature and pressure, however, diesel ignites by the high pressure and temperature while gasoline ignition is set by the spark plug.

Diesel engines sometimes emit smoke

Diesel engine smoke is caused by incomplete combustion. White smoke is caused by tiny droplets of unburned fuel resulting from engine misfiring at low temperature. This smoke should disappear as the engine warms up. Black smoke could be caused by a faulty injector, insufficient air or overloading and/or over-fueling the engine. Blue-gray smoke is the result of burning lubricating oil and is an indication the engine is in poor mechanical condition.

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.

Diesel is adjusted for cold temperatures

Exxon and Mobil service stations offer winterized products in the majority of regions that commonly experience temperatures below 10°F.


If you keep it clean, cool and dry, diesel fuel can be stored 6 months without significant quality degradation. Storing diesel for longer periods of time can be accomplished by using periodic filtrations and adding fuel stabilizers and biocides.

Other fuel information

regular gas

Unleaded gasoline

Review our standards for the most common fuel for cars in America.



This corn-based fuel blendstock provides octane.

cost of gasoline


A variety of factors are used to determine the price of gasoline.

gasoline safety


Keep yourself and your family safe by always handling gasoline correctly.

gasoline container


Find out the best rules for storing and using your fuel before it goes bad.

fuel octane

Octane ratings

Learn about octane ratings and find out what they mean for your vehicle by checking your owner’s manual.

quality fuels

Our fuel is energized with benefits 

Get the most out of your engine—and your journey—with help from our fuel.


Giving you quality fuel you can depend on 

See which of our products is right for your vehicle.

car mileage tips

Use your fuel efficiently 

These fuel efficiency tips help you get more miles out of every journey.

car engine

Watch how your engine turns energy into motion 

Take a different kind of journey. Travel through your engine and see how Exxon and Mobil gasoline works to your benefit.