Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-9369309) -
2016 - crc - 7/30/15
240 Driving and Operating
Fuel
Use the recommended fuel for
proper vehicle maintenance.
If the vehicle has an LGX 3.6L
V6 engine, use regular unleaded
gasoline with a posted octane rating
of 91 RON or higher, otherwise an
audible knocking noise may be
heard. If heavy knocking is heard
when using gasoline rated at 91
RON or higher, the engine needs
service.
If the vehicle has the LTG 2.0L L4
engine, use premium unleaded
gasoline with a posted octane rating
of 95 RON or higher. Regular
unleaded gasoline rated at 91 RON
or higher can be used, but
acceleration and fuel economy will
be reduced, and an audible
knocking noise may be heard. If this
occurs, use a gasoline rated at 95
RON or higher as soon as possible.
Otherwise, the engine could be
damaged. If heavy knocking is
heard when using gasoline rated at
95 RON or higher, the engine needs
service.If the vehicle has an LF3 3.6L V6
Twin Turbo or the LT4 V8 engine,
use premium unleaded gasoline
with a posted octane rating of 95
RON or higher. If the octane is less
than 95 RON, you could damage
the engine and may void the vehicle
warranty. If heavy knocking is heard
when using gasoline rated at 95
RON octane or higher, the engine
needs service..
Use of Seasonal Fuels
Use summer and winter fuels in the
appropriate season. The fuels
industry automatically modifies the
fuel for the appropriate season.
If fuel is left in the vehicle tank for
long periods of time, driving or
starting could be affected. Drive the
vehicle until the fuel is at one-half
tank or less, then refuel with the
current seasonal fuel.
Prohibited Fuels
Gasolines containing oxygenates
such as ethers and ethanol, as well
as reformulated gasolines, are
available in some cities. If these
gasolines comply with the
previously described specification,then they are acceptable to use.
However, E85 (85% ethanol) and
other fuels containing more than
15% ethanol must be used only in
FlexFuel vehicles.
Caution
Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
That damage would not be
covered under the vehicle
warranty.
Some gasolines, mainly high octane
racing gasolines, can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use
gasolines and/or fuel additives with
MMT as they can reduce spark plug
life and affect emission control
system performance. The
malfunction indicator lamp may turn
on. If this occurs, see your dealer
for service.
