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. Automatic Transmission Operation
    If the vehicle has an automatic transmission, the shift lever is located on the console between the seats. There are several different positions for the automatic transmission. P (Park): This position locks the front wheels. It is the best position to use when starting the engine because th ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


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