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 ...

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    System difficulties
    NOTICE Use of an incorrect program will impair the vehicle's response to the terrain and can reduce the life of the suspension and drive systems. If the system becomes partially inoperabl ...

    Rear lamp - bulb replacement
    Note: The direction indicator lamp, stop lamp, and tail lamp are LED units, and cannot be serviced. 1. Rear fog lamp. 2. Reversing lamp 3. Twist the relevant bulb unit and pull to access the bu ...

    Rear Seat Entertainment (RSE) System
    The vehicle may have a DVD Rear Seat Entertainment (RSE) system. The RSE system works with the vehicle's audio system. The DVD player is part of the front radio. The RSE system includes a radi ...