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. Shock Absorber, Replace
Rear
1.
Raise and support vehicle, then remove
tire and wheel assembly.
2.
Support rear axle with a suitable jack
stand.
3.
Remove upper and lower shock absorber
mounting bolts, then the shock ab ...