Gasoline Specifications

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 methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives  for additional information.

    See also:

    OnStar Additional Information
    Transferring Service Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ow ...

    Exiting the Feature Settings Menu
    The feature settings menu will be exited when any of the following occurs: • The vehicle is shifted out of P (Park). • The vehicle is no longer in ON/RUN. • The trip/fuel or vehicle informa ...

    Engine Oil Additives / Engine Oil Flushes
    Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection. Engine oil system ...