Fuel E85 (85% Ethanol)

If the vehicle has the 3.9L V6 engine (VIN Code M), you can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See Fuel. In all other engines, use only the unleaded gasoline described under Gasoline Octane.

Vehicles that have the 3.9L V6 engine (VIN Code M) have a green fuel cap and can use 85% ethanol fuel (E85). See Fuel E85 (85% Ethanol).

    See also:

    Cellular and GPS Antennas
    Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

    Filling a Portable Fuel Container
    WARNING! Never fill a portable fuel container while it is in the vehicle. Static electricity discharge from the container can ignite the fuel vapor. You can be badly burned and the vehicle ...

    Looks
    Enticing younger buyers into Buick showrooms is job No. 1. While the Enclave crossover and the recently redesigned LaCrosse have chipped away at the average age of Buick owners — it's down from ...