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:

    Socket in the cargo compartment
    The socket is not suitable for operating the tire inflation compressor. ►  Lift up the cover of socket 1. ...

    Using the navigation system
    WARNING In the interests of safety, only operate, adjust or view the system when it is safe to do so. WARNING The navigation system is not a substitute for driving safely, with due care ...

    Top Tether
    WARNING   Always lock the rear seat backrests in their upright position when the rear seats are occupied by passengers. Lock the rear seat backrests in their upright position before ins ...