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. Exterior Lighting
The lever is on the left side of the steering column.
: Turns on the headlamps,
parking lamps, and
taillamps.
: Turns on the parking lamps
and taillamps only.
AUTO: Automatically turns on the Daytime Running
Lamps (DRL) during daytime, and the headlamps,
parking lamps, and taillamps at n ...