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:

    Operation
    Radio with CD, Radio with CD/USB Similar Radio with CD, DVD, and USB Port The vehicle may have one of these radios as its audio system. Radios with CD, DVD, and USB Radios with CD, DVD, and US ...

    Audio/video controls
    WARNING Do not adjust the touch screen controls, or allow the system to distract the driver, while the vehicle is moving. Driver distraction can lead to accidents, causing serious injury o ...

    Installing top tether strap (2nd row captain’s seats or 2nd row bench seat)
    2nd row bench seat First, secure the child restraint with the LATCH lower anchors (2nd row captain’s or bench outboard seating positions only) or the seat belt, as applicable. 1. If ...