Recommended Fuel; Gasoline Specifications; California Fuel; Requirements - GMC Equinox 2010 Owner's Manual

8-54 Driving and Operating

Recommended Fuel

Use regular unleaded gasoline with
a posted octane rating of 87 or
higher. If the octane rating is less
than 87, an audible knocking noise,
commonly referred to as spark
knock, might be heard when driving.
If this occurs, use a gasoline rated
at 87 octane or higher as soon as
possible. If heavy knocking is heard
when using gasoline rated at
87 octane or higher, the engine
needs service.

Gasoline Specifications

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 Fuel
Additives on page 8 55 for
additional information.

California Fuel

Requirements

If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in
states adopting California emissions
standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance might
be affected. The malfunction
indicator lamp could turn on and the
vehicle might fail a smog check test.
See Malfunction Indicator Lamp on
page 4 18. If this occurs, return to
your authorized dealer/retailer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs might not be
covered by the vehicle warranty.
Fuels in Foreign
Countries
If you plan on driving in another
country outside the United States or
Canada, the proper fuel might be
hard to find. Never use leaded
gasoline or any other fuel not
recommended in the previous text
on fuel. Costly repairs caused by
use of improper fuel would not be
covered by the vehicle warranty.
To check the fuel availability, ask an
auto club, or contact a major oil
company that does business in the
country where you will be driving.