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. Suspension Strut Mount Assembly R&R
1.
Remove the strut upper mounting nuts,
Fig. 1.
2.
Raise and support the vehicle.
3.
Remove the tire and wheel.
4.
Disconnect the stabilizer shaft link
from the strut assemb ...