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. Manual Transmission Operation
This is the shift pattern for standard models.
This is the shift pattern for SS models.
Here is how to operate the manual transmission:
Notice: Do not rest your hand on the shift lever
while driving. The pressure could cause premature
wear in the transmission. The repairs ...