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. Speedometer and Odometer
The speedometer shows the speed in both kilometers
per hour (km/h) and miles per hour (mph).
The vehicle's odometer works together with the Driver
Information Center (DIC). Trip A and Trip B can be set
on the odometer. See “Trip Information” under DIC
Operation and Displays.
The vehicle do ...