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.
Chevrolet Cobalt Service & Repair Manual. Headlamp Bulb, Replace
Warning: Halogen bulbs contain
gas under pressure. Handling a bulb improperly could cause it to shatter
into flying glass fragments. To help avoid personal injury: Turn off the
lamp switch and allow the bulb to cool before changing the bulb. Leave the
lamp switch OFF until the ...