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 Service & Repair Manual. Emission Control Service Reminder Indicators (SRI) Reset Procedures
Change Oil, Change Oil Now Or Change Oil Soon Messages
After changing the engine oil,
the system must be reset as follows:
1.
Turn ignition to RUN with engine off.
2.
Press INFORMATION and RESET buttons
on Driver Inform ...