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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    Cupholders
    There are two cupholders, with removable liners, located in front of the center console. There may be cupholders located in the second row seat armrest. To access, pull the armrest down. There are ...

    Interior lighting control
    Important notes In order to prevent the vehicle's battery from discharging, the interior lighting functions are automatically deactivated after some time except for when the SmartKey is in positio ...

    Checking engine coolant level
    Check the coolant level in the reservoir when the engine is cold. If the coolant level is below MIN 2 , open the reservoir tank cap and add coolant up to the MAX1 level. If the reservoir tan ...