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. Remote Vehicle Start
Your vehicle may have a remote start feature.
This feature allows you to start the engine from
outside the vehicle. It may also start the vehicle's
heating or air conditioning systems. When you start
your vehicle using the remote start feature, the climate
control system will come on and adjust ...