2016 CADILLAC CT6 oil additives

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Driving and Operating 253
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 may not pass a smog-check
test. See Malfunction Indicator
Lamp (Check Engine Light) 0 132 .
If this occurs, return to your
authorized dealer for diagnosis. If it
is determined that the condition is
caused by the type of fuel used,
repairs may not be covered by the
vehicle warranty. Fuels in Foreign
Countries If planning to drive in countries
outside the U.S. or Canada, the
proper fuel might be hard to find.
Check regional auto club or fuel
retail brand websites for availability
in the country where driving. Never
use leaded gasoline, fuel containing
methanol, manganese, or any other
fuel not recommended. Costly
repairs caused by use of improper
fuel would not be covered by the
vehicle warranty.
Fuel Additives To keep fuel systems clean, TOP
TIER Detergent Gasoline is
recommended. See Fuel 0 251 .
If TOP TIER Detergent Gasoline is
not available, one bottle of Fuel
System Treatment PLUS added to
the fuel tank at every engine oil
change, can help. Fuel System
Treatment PLUS is the only
gasoline additive recommended by
General Motors. It is available at
your dealer. Filling the Tank
{ WarningFuel vapors and fuel fires burn
violently and can cause injury or
death.
.
To help avoid injuries to you
and others, read and follow
all the instructions on the
fuel pump island.
.
Turn off the engine when
refueling.
.
Keep sparks, flames, and
smoking materials away
from fuel.
.
Do not leave the fuel pump
unattended.
.
Do not use a cell phone
while refueling.
.
Do not reenter the vehicle
while pumping fuel.
.
Keep children away from
the fuel pump and never let
children pump fuel.
(Continued)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
272 Vehicle Care Viscosity Grade
Use SAE 5W-30 viscosity grade
engine oil.
Cold Temperature Operation: In an
area of extreme cold, where the
temperature falls below − 29 °C
( − 20 °F), an SAE 0W-30 oil may be
used. An oil of this viscosity grade
will provide easier cold starting for
the engine at extremely low
temperatures. When selecting an oil
of the appropriate viscosity grade, it
is recommended to select an oil of
the correct specification. See
“ Specification ” earlier in this section.
Engine Oil Additives/Engine
Oil Flushes Do not add anything to the oil. The
recommended oils meeting the
dexos1 specification are all that is
needed for good performance and
engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty. What to Do with Used Oil Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products.
Used oil can be a threat to the
environment. If you change your
own oil, be sure to drain all the oil
from the filter before disposal. Never
dispose of oil by putting it in the
trash or pouring it on the ground,
into sewers, or into streams or
bodies of water. Recycle it by taking
it to a place that collects used oil.
Engine Oil Life System When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on a combination of factors which include engine revolutions, engine
temperature, and miles driven.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably. For
the oil life system to work properly,
the system must be reset every time
the oil is changed.
When the system has calculated
that oil life has been diminished, it
indicates that an oil change is
necessary. A CHANGE ENGINE
OIL SOON message comes on. See
Engine Oil Messages 0 149 .
Change the oil as soon as possible
within the next 1 000 km (600 mi).
It is possible that, if driving under
the best conditions, the oil life
system might indicate that an oil
change is not necessary for up to a
year. The engine oil and filter must
be changed at least once a year
and at this time the system must be
reset. Your dealer has trained
service people who will perform this
work and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 277
Engine Coolant The cooling system in the vehicle is
filled with DEX-COOL ®
engine
coolant. This coolant needs to be
checked and replaced at
appropriate intervals. See
Maintenance Schedule 0 344 .
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0 280 .
What to Use
{ WarningAdding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
(Continued) Warning (Continued) overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
.
Gives freezing protection down
to − 37 °C ( − 34 °F), outside
temperature.
.
Gives boiling protection up to
129 °C (265 °F), engine
temperature.
.
Protects against rust and
corrosion.
.
Will not damage aluminum parts.
.
Helps keep the proper engine
temperature. CautionIf improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants 0 353 .
Never dispose of engine coolant by
putting it in the trash, pouring it on
the ground, or into sewers, streams,
or bodies of water. Have the coolant
changed by an authorized service
center, familiar with legal
requirements regarding used
coolant disposal. This will help
protect the environment and your
health.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
388 Index E Electric Parking Brake . . . . . . . . . . 214
Electric Parking Brake Light . . . . 134
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 260
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 290
Fuses and Circuit Breakers . . . 290
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 293
Overload . . . . . . . . . . . . . . . . . . . . . 289
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 295
Emergency
OnStar ®
. . . . . . . . . . . . . . . . . . . . . . 376
Engine
Air Cleaner/Filter . . . . . . . . . . . . . 273
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 132
Compartment Overview . . . . . . . 265
Coolant . . . . . . . . . . . . . . . . . . . . . . . 277
Coolant Heater . . . . . . . . . . . . . . . 206
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 128 Engine (cont'd)
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . 275
Cooling System Messages . . . 149
Drive Belt Routing . . . . . . . . . . . . 360
Exhaust . . . . . . . . . . . . . . . . . . . . . . 209
Oil Life System . . . . . . . . . . . . . . . 272
Oil Messages . . . . . . . . . . . . . . . . . 149
Oil Pressure Gauge . . . . . . . . . . 126
Oil Pressure Light . . . . . . . . . . . . 138
Overheating . . . . . . . . . . . . . . . . . . 280
Power Messages . . . . . . . . . . . . . 150
Running While Parked . . . . . . . . 210
Starting . . . . . . . . . . . . . . . . . . . . . . . 204
Engine Oil
Temperature Gauge . . . . . . . . . . 127
Entry Lighting . . . . . . . . . . . . . . . . . . . 175
Equipment, Towing . . . . . . . . . . . . . 259
Event Data Recorders . . . . . . . . . . 373
Exit Lighting . . . . . . . . . . . . . . . . . . . . 176
Extender, Safety Belt . . . . . . . . . . . . 75
Exterior Lamp Controls . . . . . . . . . 170
Exterior Lamps Off Reminder . . . 172
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 176 F Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter,
Engine Air Cleaner . . . . . . . . . . . 273
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 172
Flashers, Hazard Warning . . . . . . 173
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 320
Changing . . . . . . . . . . . . . . . . . . . . . 321
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 341
Fluid
Automatic Transmission . . . . . . 273
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 283
Washer . . . . . . . . . . . . . . . . . . . . . . . 281
Forward Collision Alert
(FCA) System . . . . . . . . . . . . . . . . . 237
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 371
Front Automatic Braking
(FAB) System . . . . . . . . . . . . . . . . . 240
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 241
Front Seats
Heated and Ventilated . . . . . . . . . . 64
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Additives . . . . . . . . . . . . . . . . . . . . . 253
Economy Driving . . . . . . . . . . . . . . . 27