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GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
13556232) - 2020 - CRC - 5/13/19
Driving and Operating
209
Recommended Fuel (LTG
2.0L Turbo Engine)
Use the recommended fuel for
proper vehicle maintenance.
Use unleaded petrol with a posted
octane rating of 95 RON or higher
and with ethanol up to 10% by
volume. Unleaded petrol rated at 91
RON can be used, but acceleration
and fuel economy will be reduced,
and an audible knocking noise may
be heard. If this occurs, use petrol
rated at 95 RON as soon as
possible, otherwise the engine could
be damaged. If heavy knocking is
heard when using unleaded petrol
rated at 95 RON, the engine needs
service.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:
.
Fuel with any amount of
methanol, methylal,
ferrocene, and aniline.
These fuels can corrode
metal fuel system parts or
damage plastic and rubber
parts.
.
Fuel containing metals such
as methylcyclopentadienyl
manganese tricarbonyl
(MMT), which can damage
the emissions control
system and spark plugs.
.
Fuel with a posted octane
rating of less than the
recommended fuel. Using
this fuel will lower fuel
economy and performance,
and may decrease the life of
the emissions catalyst.
Fuel Additives
TOP TIER Detergent Gasoline is
highly recommended for use with
your vehicle. If your country does
not have TOP TIER Detergent
Gasoline, add ACDelco Fuel
System Treatment Plus-Gasoline to
the vehicle
’
s gasoline fuel tank at
every oil change or 15 000 km
(9,000 mi), whichever occurs first.
TOP TIER Detergent Gasoline and
ACDelco Fuel System Treatment
Plus-Gasoline will help keep your
vehicle
’
s engine fuel deposit free
and performing optimally. If you are
unable to obtain ACDelco Fuel
System Treatment Plus - Gasoline,
consult your dealer for the GM
approved additive available in your
country.
Filling the Tank
An arrow on the fuel gauge
indicates which side of the vehicle
the fuel door is on. See
.