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:

    Deactivating/activating ESP®
    Observe the "Important safety notes" section. WARNING   ESP® should not be deactivated during normal driving other than in the circumstances described below. Disabling the ...

    Headlight switch
    Lighting 1 Turn the switch to the position: The front parking, side marker, tail, license plate and instrument lights will come on. 2 Turn the switch to the position: Headlights wil ...

    Opening and closing the tailgate
    NOTICE Ensure there is minimum space of 39 in (1.0 m) above the rear of the vehicle before operating the tailgate. Insufficient space may result in damage to the vehicle. Do not operate the ...