Buick LaCrosse: Recommended Fuel - Fuel - Driving and Operating - Buick LaCrosse Owners ManualBuick LaCrosse: 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 ga ...

    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 methylcyclopen ...

    See also:

    Opening the fuel tank cap
    Perform the following steps to open the fuel tank cap: ■ Before refueling the vehicle Vehicles without a smart key system Turn the engine switch off and ensure that all the doors and windows ...

    Important safety notes
    Do not leave the SmartKey in the trunk/cargo compartment. You could otherwise lock yourself out. WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always ...

    Tyre care
    Tyre care To make sure the front and rear tyres ofyour vehicle wear evenly and last longer,we recommend that you swap the tyresfrom front to rear and vice versa at regularintervals of between 5 000 a ...