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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    For your own safety
    Maintenance and repairs Advanced technology, e.g., the use of modern materials and high-performance electronics, requires suitable maintenance and repair methods. Therefore, have this work perfo ...

    To Exit Remote Start Mode Without Driving The Vehicle
    Press and release the REMOTE START button one time or allow the engine to run for the entire 15 minute cycle. NOTE: To avoid unintentional shut downs, the system will disable the one-time press ...

    Repairing minor paint damage
    CAUTION: Remove apparently harmless lookingsubstances from the paintworkimmediately (e.g. bird droppings, treeresins, insect remains, tar spots, road saltand industrial fall out). You should repair ...