Gasoline Specifications
At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 in Canada. Some gasolines may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). General Motors recommends against the use of gasolines containing MMT.
See also:
Maintenance Requirements
Notice: Maintenance intervals, checks,
inspections, replacement parts, and
recommended fluids and lubricants as
prescribed in this manual are necessary to
keep your vehicle in good working conditi ...
Tachometer
The tachometer displays the engine
speed in revolutions per
minute (rpm).
For eAssist vehicles, when the
ignition is in ON/RUN, the
tachometer indicates the vehicle
status. When pointing to ...
When the Change Engine Oil Soon Message Displays
Change engine oil and filter. See Engine Oil . An Emission Control Service.
When the CHANGE ENGINE OIL SOON message displays, service is required for the vehicle as soon as possible, within the next ...