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. Wheel, Replace
Removal
Caution: Never use heat to
loosen a tight wheel. This can shorten the life of wheel and damage wheel
bearings.
Wear approved safety glasses when
performing the following service procedures.
Do not use power grinders to clean
any of the brake ...