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. Door Lock Cylinder
1.
Remove exterior door handle as outlined
in "Door Handle.".
2.
Disengage lock rod from door lock cylinder.
3.
Remove door lock cylinder.
4.
Reverse procedure to instal ...