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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    Under body maintenance
    Regularly flush the underbody with plain water, and pay particular attention to areas where mud and debris collect. If damage or corrosion are detected, have the vehicle checked by a Land Rover R ...

    Throttle and Brake Pedal Adjustment
    The vehicle has adjustable throttle and brake pedals that allow you to change their positions. The switch used to adjust the pedals is located on the center console below the climate control syst ...

    Interior lamp bulb replacement
    Follow the steps illustrated. Insert a new bulb and refit the components. 1. Footwell, puddle and loadspace lamps. 2. Courtesy lamp and map lamps. 3. Vanity mirror lamps. 4. Rear courtesy lamps. ...