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. Tire & Wheel Assembly Balance
Refer to Fig. 1
when performing the following procedure.
1.
Raise and support the vehicle.
2.
Mark the location of the wheels to
the wheel studs and mark the specific vehicle position on each tire
and wheel LF, LR, ...