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. Braking in Emergencies
At some time, nearly every driver gets into a situation
that requires hard braking.
If the vehicle has Electronic Stability Control (ESC)
with Antilock Brake System (ABS), it allows the driver
to steer and brake at the same time. However, if the
vehicle does not have ESC with ABS, the first
re ...