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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    Fault tracing and actions
    If the message Windscreen Sensors blocked is displayed, this means that the camera is obscured and cannot detect pedestrians, vehicles or road marker lines in front of the vehicle. This, in turn, ...

    Entry comparison
    Entry of names and addresses: the selection is narrowed down every time a letter is entered and letters may be added automatically. The entries are continuously compared to the data stored in t ...

    Notes on selecting, mounting and replacing tires
     - Only mount tires and wheels of the same type and make.  - Only mount tires of the correct size onto the wheels.  - After mounting new tires, run them in at moderate speeds fo ...