Buick LaCrosse: Recommended Fuel - Fuel - Driving and Operating - Buick LaCrosse Owners ManualBuick LaCrosse: Recommended Fuel

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, commonly referred to as spark knock, might be heard when driving.

If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.

    Fuel
    Use of the recommended fuel is an important part of the proper maintenance of this vehicle. To help keep the engine clean and maintain optimum vehicle performance, we recommend the use of ga ...

    Gasoline Specifications (U.S. and Canada Only)
    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 methylcyclopen ...

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    Replacing a flat tire
    Chock the tires. For vehicles with steel wheels, remove the wheel ornament using the wrench. To protect the wheel ornament, place a rag between the wrench and the wheel ornament, as ...

    Instrument brightness control
    The instrument cluster illuminates when the ignition switch is placed in the ON position. The instrument brightness control operates when the headlight control switch is in the AUTO or positi ...

    Making a call
    1. Ensure that is shown at the top of the center console display and that the handsfree function is in telephone mode. 2. Dial the desired phone number using the center console keypad or use the s ...