2021 CADILLAC CT5 fuel additives

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
DRIVING AND OPERATING 209
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . 297
Recommended Fuel (LSY 2.0L L4Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Recommended Fuel (LGY 3.0L V6 Engine) . . . . . . . . . . . . . . . . . . . . . . 297
Prohibited Fuels . . . . . . . . . . . . . . . . . . 298
Fuels in Foreign Countries . . . . . . . 298
Fuel Additives . . . . . . . . . . . . . . . . . . . . 298
Filling the Tank . . . . . . . . . . . . . . . . . . 298
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . . . . . . 300
Trailer Towing
General Towing Information . . . . 300
Driving Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 301
Trailer Towing (LSY 2.0L L4 and
LGY 3.0L V6 Engines Only) . . . . 304
Towing Equipment . . . . . . . . . . . . . . . 306
Conversions and Add-Ons
Add-On Electrical Equipment . . . 307
Driving Information
Driving for Better Fuel
Economy
Driving habits can affect fuel mileage.
Here are some driving tips to get the
best fuel economy possible:
.Set the climate controls to the
desired temperature after the engine
is started, or turn them off when
not required.
.Avoid fast starts and accelerate
smoothly.
.Brake gradually and avoid abrupt
stops.
.Avoid idling the engine for long
periods of time.
.When road and weather conditions
are appropriate, use cruise control.
.Always follow posted speed limits or
drive more slowly when conditions
require.
.Keep vehicle tires properly inflated.
.Combine several trips into a
single trip.
.Replace the vehicle's tires with the
same TPC Spec number molded into
the tire's sidewall near the size.
.Follow recommended scheduled
maintenance.
Distracted Driving
Distraction comes in many forms and
can take your focus from the task of
driving. Exercise good judgment and
do not let other activities divert your
attention away from the road. Many
local governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, keep your
eyes on the road, keep your hands on
the steering wheel, and focus your
attention on driving.
.Do not use a phone in demanding
driving situations. Use a hands-free
method to place or receive
necessary phone calls.
.Watch the road. Do not read, take
notes, or look up information on
phones or other electronic devices.
.Designate a front seat passenger to
handle potential distractions.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
298 DRIVING AND OPERATING
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 metal fuel system parts
or damage plastic and rubber
parts.(Continued)
Caution (Continued)
.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, seeProhibited Fuels 0298.
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.
Filling the Tank
An arrow on the fuel gauge indicates
which side of the vehicle the fuel door
is on. See
Fuel Gauge 0100.
{Warning
Fuel vapors and fuel fires burn
violently and can cause injury or
death.
Follow these guidelines 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.
(Continued)

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
426 INDEX
F
Filter,Engine Air Cleaner . . . . . . . . . . . . . . . . 320
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 134
Flashers, Hazard Warning . . . . . . . . . . 135
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Fluid Automatic Transmission . . . . . . . . . 319
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 27
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Front Seats
Heated and Ventilated . . . . . . . . . . . . 42
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Economy, Driving for Better . . . . . 209
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 300
Filling the Tank . . . . . . . . . . . . . . . . . . . 298
Foreign Countries . . . . . . . . . . . . . . . . . 298
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Fuel (cont'd)
Low Fuel Warning Light . . . . . . . . . 111
Management, Active . . . . . . . . . . . . . . 230
Prohibited Fuels . . . . . . . . . . . . . . . . . . 298
Recommended . . . . . . . . . . . . . . . . . . . . 297
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Fuses
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Fuses and Circuit Breakers . . . . . . . 334
Instrument Panel Fuse Block . . . . 337
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
G
Garage Door Opener . . . . . . . . . . . . . . . . 128Programming . . . . . . . . . . . . . . . . . . . . . . 129
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 332
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . 100, 101
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 99
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 99
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 99
Warning Lights and Indicators . . . 93 General Information
Service and Maintenance . . . . . . . . 381
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 309
Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . 167
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
Guidance Problems with the Route . . . . . . . . . 168
H
Hazard Warning Flashers . . . . . . . . . . 135
HD Radio Technology . . . . . . . . . . . . . . 149
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 36
Head-up Display . . . . . . . . . . . . . . . . . . . . 118
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 134
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 134
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 134
High-Beam On Light . . . . . . . . . . . . . . 111
High/Low Beam Changer . . . . . . . . . 134
Lamps On Reminder . . . . . . . . . . . . . . 112
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . 87