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. Ashtray(s) and Cigarette Lighter
The vehicle may have an ashtray and cigarette lighter.
To use the lighter, located on the instrument panel
below the climate controls, push it in all the way and
let go. When it is ready, it will pop back out by itself.
Notice: Holding a cigarette lighter in while it is
heating will not allow t ...