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.

    See also:

    LaCrosse in the Market
    The LaCrosse isn't a product of the yesteryear thinking that drove GM to build a competitor to whatever Lincoln was building across town. That's the sort of culture that got GM into trouble in the ...

    Wheel Alignment and Tire Balance
    The tires and wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. Adjustments to wheel alignment and tire bal ...

    Checking the Restraint Systems
    Now and then, make sure the safety belt reminder light and all your belts, buckles, latch plates, retractors and anchorages are working properly. Look for any other loose or damaged safety belt ...