Fuel - Cadillac 2016 CTS Owner's Manual

LKA assistance and/or LDW alerts
may occur due to tar marks,
shadows, cracks in the road,
temporary or construction lane
markings, or other road
imperfections. This is normal system
operation; the vehicle does not need
service. Turn LKA off if these
conditions continue.

Fuel

Use of the recommended fuel is an
important part of the proper
maintenance of this vehicle. When
driving in the U.S. and Canada, to
help keep the engine clean and
maintain optimum vehicle
performance, we recommend using
TOP TIER Detergent Gasolines.
See www.toptiergas.com for a list of
TOP TIER Detergent Gasolines.
If the vehicle has an LGX 3.6L
V6 engine, use regular unleaded
gasoline meeting ASTM
specification D4814 with a posted
octane rating of 87 or higher. Do not
Driving and Operating
use gasoline with an octane rating
below 87, as it may cause engine
damage and will lower fuel
economy.
If the vehicle has an LTG 2.0L L4
Turbo engine, use premium
unleaded gasoline meeting ASTM
specification D4814 with a posted
octane rating of 91 or higher.
Regular unleaded gasoline rated at
87 octane 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
91 octane or higher as soon as
possible. Otherwise, the engine
could be damaged. If heavy
knocking is heard when using
gasoline with a 91 octane rating 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
meeting ASTM specification D4814
with a posted octane rating of 91 or
higher. If the octane is less than 91,
damage to the engine may occur
and may void the vehicle warranty.
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