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 Additives for additional information.
Gasoline Octane
California FuelChevrolet Cobalt Owners Manual. Parking Brake
Automatic Shown, Manual Similar
The parking brake lever is located between the
front seats.
For vehicles equipped with an armrest, lift the console
armrest in order to access the parking brake lever.
To set the parking brake, hold the brake pedal down
and pull up on the parking brake lever. ...