Chevrolet Cobalt Owners Manual: Gasoline Specifications

At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT).

We recommend against the use of gasolines containing MMT. See Additives for additional information.

    Gasoline Octane
    If the vehicle has the 2.2L L4 engine (VIN Code 5), use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commo ...

    California Fuel
    If the vehicle is certified to meet California Emissions Standards, it is designed to operate on fuels that meet California specifications. See the underhood emission control label. If this fuel is ...

    See also:

    Chevrolet Cobalt Owners Manual. Roadside Assistance Program
    U.S.: 1-800-CHEV-USA (1-800-243-8872) TTY Users: 1-888-889-2438 Canada: 1-800-268-6800 As the owner of a new Chevrolet, you are automatically enrolled in the Roadside Assistance program. This program provides technically trained advisors who are available 24 hours a day, 365 days a year, mino ...

    Chevrolet Cobalt Owners Manual

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