Gasoline Octane

Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, you may notice an audible knocking noise when you drive, commonly referred to as spark knock. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.

If you are using gasoline rated at 87 octane or higher and you hear heavy knocking, your engine needs service.

    See also:

    Sunroof
    Sunroof On vehicles with a sunroof, the switches are located on the overhead console. The ignition must be in ON/RUN or ACC/ACCESSORY, or in Retained Accessory Power (RAP). See Retained ...

    Electric Parking Brake Light
    The parking brake status light comes on when the brake is applied. If the light continues flashing after the parking brake is released, or while driving, there is a problem with the Electric Parking ...

    Intelligent personal technologies
    The contemporary atmosphere of the cabin includes the digital connectivity and personal technology offered in the new Buick LaCrosse. That includes features such as in-dash navigation, Bluetooth c ...