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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    Trip distance
    Distance travelled since the last memory reset. The maximum trip reading is 9 999.9 (miles or kilometers). The computer will automatically reset to zero if this distance is exceeded. ...

    Vehicle
    Display messages Shift to P or N to start engine. Possible causes/consequences and ► Solutions You have attempted to start the engine with the transmission in position R or D. ► Sh ...

    Trailer electrical connection
    NOTICE Only connect approved electrical circuits, which are in good condition, to the trailer socket. When a trailer electrical connection is made, and the vehicle’s direction indicators ...