2023 CADILLAC XT6 fuel additives

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Driving and Operating 239
Assistance Systems forDriving . . . . . . . . . . . . . . . . . . . . . . 326
Forward Collision Alert (FCA) System . . . . . . . . . . . . . 326
Automatic Emergency
Braking (AEB) . . . . . . . . . . . . . 328
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . 330
Night Vision System . . . . . . 333
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . 336
Lane Change Alert (LCA) . . . . . . . . . . . . . . . . . 336
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . 338
Surround Vision Recorder . . . . . . . . . . . . . . . . . . . . 341
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . 342
Recommended Fuel (2.0LL4 Turbo Engine) . . . . . . . . 343
Recommended Fuel (3.6L V6 Engine) . . . . . . . . . . . . . . . . . 343
Prohibited Fuels . . . . . . . . . . . 344
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . 344
Fuel Additives . . . . . . . . . . . . . . 344
Filling the Tank . . . . . . . . . . . . . 344
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . 346
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . 347
Driving Characteristics and Towing Tips . . . . . . . . . . 347
Trailer Towing . . . . . . . . . . . . . . 351
Towing Equipment . . . . . . . . 356
Trailer Sway
Control (TSC) . . . . . . . . . . . . . 359
Conversions and Add-Ons
Add-On ElectricalEquipment . . . . . . . . . . . . . . . . . 360
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.
.On AWD vehicles, use Tour
Mode when conditions
permit.
.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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
344 Driving and Operating
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.
.Fuel containing metals
such as
methylcyclopentadienyl
manganese tricarbonyl(Continued)
Caution (Continued)
(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 0344.
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
0130.
{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:
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
496 INDEX
EmergencyOnStar . . . . . . . . . . . . . . . . . . . . . . . . 483
Engine Air Cleaner/Filter . . . . . . . . . . 375
Air Filter Life System . . . . . 374
Check Light(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 134
Compartment Overview . . . . . . . . . . . . . . . . . . . 367
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 131
Cooling System . . . . . . . . . . . . 376
Drive Belt Routing . . . . . . . . . 465
Exhaust . . . . . . . . . . . . . . . . . . . . . . 265
Heater . . . . . . . . . . . . . . . . . . . . . . . . . 261
Oil Life System . . . . . . . . . . . . . 373
Oil Pressure Light . . . . . . . . . . 142
Overheating . . . . . . . . . . . . . . . . . . 381
Power Messages . . . . . . . . . . . 151
Running While Parked . . . 266
Starting . . . . . . . . . . . . . . . . . . . . . . 258
Entry Lighting . . . . . . . . . . . . . . . . . 162
Equipment, Towing . . . . . . . . . 356
Event Data Recorders . . . . . 480
Exit Lighting . . . . . . . . . . . . . . . . . . . 163
Extended Parking . . . . . . . . . . . 265
Extender, Seat Belt . . . . . . . . . . . 70 Exterior
Lamp Controls . . . . . . . . . . . . . . 156
Lamps Off Reminder . . . . . . 158
Lighting Battery Saver . . . 163
F
Filter
Engine Air Cleaner . . . . . . . . 375
Flash-to-Pass . . . . . . . . . . . . . . . . . . 158
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . 160
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 425
Changing . . . . . . . . . . . . . . . . . . . . . 426
Floor Mats . . . . . . . . . . . . . . . . . . . . . 450
Fluid AutomaticTransmission . . . . . . . . . . . . . . 374
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 384
Washer . . . . . . . . . . . . . . . . . . . . . . . 382
Folding Mirrors . . . . . . . . . . . . . . . . . 37
Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . . 326
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
Front
Heated and VentilatedSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Front (cont'd)
Pedestrian Braking
(FPB) System . . . . . . . . . . . . . 330
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 344
Economy, Driving forBetter . . . . . . . . . . . . . . . . . . . . . . . 239
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . 346
Filling the Tank . . . . . . . . . . . . . 344
Foreign Countries . . . . . . . . . 344
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Management, Active . . . . . . 264
Prohibited Fuels . . . . . . . . . . . 344
Recommended . . . . . . . . . . . . . 343
Top Tier . . . . . . . . . . . . . . . . . . . . . . 342
Fuses Engine CompartmentFuse Block . . . . . . . . . . . . . . . . . 392
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 391
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . 396
Rear Compartment
Fuse Block . . . . . . . . . . . . . . . . . 398