octane CADILLAC CT5 2023 Owners Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
248 Driving and Operating
Caution
During a first time track or
racing event, high axle
temperatures can occur.
Damage could be caused to
the axle and would not be
covered by the vehicle
warranty. Do not drive as
long or as fast the first time
the vehicle is driven on the
track or raced.
.The axle lubricant should be
replaced with new lubricant.
.On vehicles without a
differential cooler, additional
cooling capacity is required
for continuous competitive
driving. The V-Series
Blackwing has a differential
cooler, so no additional
cooling capacity is
necessary.
Engine OilCaution
If the vehicle is used for
track events and
competitive driving, the
engine may use more oil
than it would with normal
use. Low oil levels can
damage the engine. Check
the oil level often and
maintain the proper level.
See Engine Oil 0383.
Check the oil level often during
track events and competitive
driving, and keep the oil level
at or near the upper mark. See
“Checking the Engine Oil" in
Engine Oil 0383.
Fuel
Use premium unleaded
gasoline with a posted octane
rating of 93 at a track event.
Unleaded gasoline with a
posted octane rating of 91 may be used, but
performance will be degraded.
See Prohibited Fuels
0361.
Automatic or Manual
Transmission Fluid
Have the transmission fluid
set to the track specific oil
level prior to track usage.
Transmission fluid should be
changed after every 15 hours
of track usage. Any
transmission level set or
change should be performed
at the dealer.
Brakes
Battery Disconnect
Disconnect the battery before
servicing the hydraulic brake
system. It is critical to
disconnect the battery before
bleeding the system, replacing
the pads, or any other work.
The battery must be
disconnected to prevent the
brake master cylinder from
pressurizing the hydraulic
system during its automated

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
360 Driving and Operating
.Once the SD card is full, the
oldest files will be
overwritten. Saved files will
not be overwritten.
To Delete Data : Remove the
SD card from the vehicle and
insert into a PC to manually
delete the file.
Video player unavailable can
occur if:
.No SD card is present.
.An empty SD card is present.
.The video files are the
wrong format.
.The video files are corrupt.
.The SD card is full.
.There is a system error.
Other files should not be
stored on the same SD card as
the surround vision recorder
files. Storing other files on the
same card may increase
recording start up and
playback time or result in a
loss of data. An error message
may be displayed if no surround vision recorded
video file is available for
playback.
Fuel
Top Tier Fuel
GM recommends the use of
TOP TIER Detergent Gasoline
to keep the engine clean,
reduce engine deposits, and
maintain optimal vehicle
performance. Look for the
TOP TIER Logo or see
www.toptiergas.com for a list
of TOP TIER Detergent
Gasoline marketers and
applicable countries.
Recommended Fuel
(LSY 2.0L L4 Engine)
Premium unleaded gasoline
meeting ASTM specification
D4814 with a posted octane
rating (R+M)/2 of 91 or greater
is recommended. If unavailable,
unleaded gasoline with a
posted octane rating of
87 may be used, but will result

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
Driving and Operating 361
in reduced performance and
driveability. If heavy knocking
is heard when using gasoline
rated at 91 or greater, the
engine needs service.
Do not use any fuel labeled
E85 or FlexFuel. Do not use
gasoline with ethanol levels
greater than 15% by volume.
Recommended Fuel
(LGY 3.0L V6 and
LT4 6.2L V8 Engines)
Premium unleaded gasoline
meeting ASTM specification
D4814 with a posted octane
rating (R+M)/2 of 91 or greater
is required. The use of the
correct fuel is an important
part of the proper
maintenance of the vehicle
and a condition of the vehiclewarranty. If heavy knocking is
heard when using gasoline
rated at 91 or greater, the
engine needs service.
Do not use any fuel labeled
E85 or FlexFuel. Do not use
gasoline with ethanol levels
greater than 15% by volume.
Prohibited Fuels
Caution
Do not use fuels with any of
the following conditions;
doing so may damage the
vehicle and void its
warranty:
.For vehicles that are not
FlexFuel, fuel labeled
greater than 15% ethanol
by volume, such as
mid-level ethanol blends
(16–50% ethanol), E85,
or FlexFuel.
.Fuel with any amount of
methanol, methylal,
ferrocene, and aniline.
These fuels can corrode
(Continued)
Caution (Continued)
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.
Fuels in Foreign
Countries
The U.S., Canada, and Mexico
post fuel octane ratings in
anti-knock index (AKI). For fuel
not to use in a foreign country,
see Prohibited Fuels 0361.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/10/22
364 Driving and Operating
Warning (Continued)
others could be badly
burned and the vehicle could
be damaged.
3. Remove and clean the funnel adapter and return
it to the storage location.
Filling a Portable Fuel
Container
{Warning
Never fill a portable fuel
container while it is in the
vehicle. Static electricity
discharge from the
container can ignite the fuel
vapor. You or others could
be badly burned and the
vehicle could be damaged.
To help avoid injury to you
and others:
.Dispense fuel only into
approved containers.
(Continued)
Warning (Continued)
.Do not fill a container
while it is inside a vehicle,
in a vehicle's trunk, in a
pickup bed, or on any
surface other than the
ground.
.Bring the fill nozzle in
contact with the inside of
the fill opening before
operating the nozzle.
Maintain contact until
filling is complete.
.Keep sparks, flames, and
smoking materials away
from fuel.
.Avoid using electronic
devices while
pumping fuel.
Trailer Towing
General Towing
Information
Only use towing equipment
that has been designed for the
vehicle. Contact your dealer or trailering dealer for assistance
with preparing the vehicle to
tow a trailer. Read the entire
section before towing a trailer.
To tow a disabled vehicle, see
Transporting a Disabled
Vehicle
0455. To tow the
vehicle behind another vehicle
such as a motor home, see
Recreational Vehicle Towing
0 457.
When towing with the 2.0L L4
engine, only use unleaded
gasoline with an octane rating
of 89 or higher. Using gasoline
with a lower octane rating
while towing may damage the
engine and may not be
covered by the vehicle
warranty. See Recommended
Fuel (LSY 2.0L L4 Engine)
0 360 or
Recommended Fuel (LGY 3.0L
V6 and LT4 6.2L V8 Engines)
0 361.