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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    Clearing the phone book
    In phone mode, all entries in the infotainment system's phone book can be cleared in Phone menu Phone book Clear phone book. NOTE Clearing the entries in the infotainment system's pho ...

    Operation signals
    Doors: A buzzer sounds and the emergency flashers flash to indicate that the doors have been locked/unlocked. (Locked: Once; Unlocked: Twice) Trunk: A buzzer sounds to indicate that the trunk has b ...

    SRS airbag system components
    1 Front impact sensors 2 Front passenger occupant classification system (ECU and sensors) 3 Knee airbags 4 Side impact sensors (front door) 5 Side impact sensors (front) 6 Front passenger airba ...