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. Rear License Plate Lamp Bulb, Replace
1.
Remove rear license plate lamp assembly.
2.
Rotate license plate lamp socket (1)
1/4 turn to remove, Fig. 1.
3.
Remove license plate lamp bulb (2),
Fig. 1.
4.
Reverse proc ...