Buick Enclave: Recommended Fuel - Fuel - Driving and Operating - Buick Enclave Owner's ManualBuick Enclave: 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 gasoline ...

    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 methylcyclopentadie ...

    See also:

    Vehicle Positioning
    At times, the position of the vehicle on the map may be inaccurate due to one or more of the following reasons: Road system has changed. Vehicle is driving on slippery road surfaces such as in ...

    View through the camera
    The area behind the vehicle is displayed as a mirror image, as in the rear-view mirror. WARNING   The rear view camera is only an aid and may display obstacles • from a distorted pers ...

    Battery
    If the vehicle is a hybrid, see the hybrid supplement for more information. Refer to the replacement number on the original battery label when a new battery is needed. See Engine Compartment Overvie ...