2023 CHEVROLET CORVETTE fuel additives

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16287457) - 2023 - CRC - 3/10/22
168 Driving and Operating
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . 169
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 169
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 170
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 170
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 170
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 171
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . 172
Track Events and CompetitiveDriving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Driving on Wet Roads . . . . . . . . . . . . . . . . . 183
Hill and Mountain Roads . . . . . . . . . . . . . . 184
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 184
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 185
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 186
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 189
Front Air Dam (and Splitter) . . . . . . . . . . . 189
Composite Materials . . . . . . . . . . . . . . . . . . . 189
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 190
Starting the Engine . . . . . . . . . . . . . . . . . . . . 191
Retained Accessory Power (RAP) . . . . . . . 192
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 193
Shifting out of Park . . . . . . . . . . . . . . . . . . . 193
Parking over Things That Burn . . . . . . . . 194 Active Fuel Management . . . . . . . . . . . . . . 194
Extended Parking . . . . . . . . . . . . . . . . . . . . . . 194
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 194
Running the Vehicle While Parked . . . . . 195
Dual Clutch Transmission
Dual Clutch Transmission . . . . . . . . . . . . . . 195
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 198
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 203
Antilock Brake System (ABS) . . . . . . . . . . 204
Electric Parking Brake . . . . . . . . . . . . . . . . . 204
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 205
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Hill Rollback Control . . . . . . . . . . . . . . . . . . . 208
Driver Mode Control . . . . . . . . . . . . . . . . . . 208
Front Lift System . . . . . . . . . . . . . . . . . . . . . . 214
Competitive Driving Mode . . . . . . . . . . . . . 215
Limited-Slip Differential (Stingray Models Without Z51 Performance
Package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Limited-Slip Differential (Stingray With Z51 Performance Package and
Z06 model) . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 219
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 221
Assistance Systems for Parking orBacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 223
Curb View Camera . . . . . . . . . . . . . . . . . . . . 224
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Side Blind Zone Alert (SBZA) . . . . . . . . . . . 225
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Recommended Fuel . . . . . . . . . . . . . . . . . . . . 227
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 227
Fuels in Foreign Countries . . . . . . . . . . . . . 228
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 228
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 228
Filling a Portable Fuel Container . . . . . . . 229
Trailer Towing
General Towing Information . . . . . . . . . . . 230
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . 230

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16287457) - 2023 - CRC - 3/10/22
174 Driving and Operating
Engine Cooling
If reduced performance is experienced during
track events or competitive driving, turning
off the A/C will help to improve engine
performance.
Maintain a mixture of 40% DEX-COOL
coolant and 60% clean, drinkable water to
optimize engine performance.
Fuel
Unleaded gasoline, rated at 93 octane or
higher, is required.
Caution
Some high octane fuels contain additives
and compounds that may damage the
vehicle and void the vehicle warranty. See
Prohibited Fuels0227.
Dual Clutch Transmission (DCT) Fluid
The transmission fluid and external canister
filter should be changed after every 24 hours
of track use. Change the fluid and external
canister filter as soon as possible if
prompted by the transmission fluid life
monitor that remaining fluid life is low. Stingray
Add an additional 2 L (2 qt) of DCT
transmission fluid before track use. It is not
required to remove the additional 2 L (2 qt)
of DCT fluid after the track event.
Any transmission level set or change should
be performed at your dealer.
Z06
Additional transmission fluid is not required
for the Z06. The Z06 comes track ready
from the factory.
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 self diagnostic tests that can
occur when a door is opened or the remote
key is present.
{Warning
To avoid personal injury and/or vehicle
damage, always disconnect the battery
before performing service work on the
hydraulic brake system. Bleeding the
brake system with the battery connected
can lead to the system diagnosing a leak
or air in the braking system. A Diagnostic
Trouble Code (DTC) may set and vehicle
speed may be limited.
Brake Fluid
Replace existing brake fluid with a qualified
high performance DOT 4 brake fluid from a
sealed container. Brake fluid with a dry
boiling point >310 °C (590 °F) is qualified.
If high performance brake fluid is used,
replace it with GM approved brake fluid
before driving on public roads. If high
performance brake fluid is in the vehicle and
the age of the brake fluid is over a month
old or unknown, replace the brake fluid
before track events and competitive driving.
Do not use silicone or DOT-5 brake fluids.
Check the fluid level before each competitive
driving event.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16287457) - 2023 - CRC - 3/10/22
228 Driving and Operating
Caution (Continued)
.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 Fuels0227.
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 082.
{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.
.Do not leave the fuel pump
unattended.
.Avoid using electronic devices while
refueling.
.Do not re-enter the vehicle while
pumping fuel.
.Keep children away from the fuel
pump and never let children
pump fuel.
(Continued)
Warning (Continued)
.Before touching the fill nozzle, touch a
metallic object to discharge static
electricity from your body.
.Fuel can spray out if the fill nozzle is
inserted too quickly. This spray can
happen if the tank is nearly full, and is
more likely in hot weather. Insert the
fill nozzle slowly and wait for any hiss
noise to stop before beginning to
flow fuel.
The fuel door unlocks when the vehicle
doors are unlocked. See Remote Key
Operation 07.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16287457) - 2023 - CRC - 3/10/22
342 Index
DualAutomatic Climate Control System . . . . 163
Clutch Transmission . . . . . . . . . . . . . . . . . . . . 195
Clutch Transmission Fluid . . . . . . . . . . . . . . 249
Clutch Transmission Fluid Life
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Dual Clutch Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 198
E
ElectricBrake Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Parking Brake . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Parking Brake Light . . . . . . . . . . . . . . . . . . . . . 88
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 230
System Overload . . . . . . . . . . . . . . . . . . . . . . 264
Electrical System Fuses and Circuit Breakers . . . . . . . . . . . . . 266
Instrument Panel Fuse Block . . . . . . . . . . . 266
Rear Compartment Fuse Block . . . . . . . . . 268
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332 Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 251
Air Filter Life System . . . . . . . . . . . . . . . . . . 250
Check Light (Malfunction Indicator) . . . . . 86
Compartment Overview . . . . . . . . . . . . . . . . 235
Coolant Temperature Gauge . . . . . . . . . . . . 83
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . 252
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 318
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 248
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 91
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 98
Running While Parked . . . . . . . . . . . . . . . . . 195
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Engine Compartment Lamp . . . . . . . . . . . . . . 106
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 329
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 194
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . . 51
Exterior
Lamp Controls . . . . . . . . . . . . . . . . . . . . . . . . . 102
Lamps Off Reminder . . . . . . . . . . . . . . . . . . . 102
Lighting Battery Saver . . . . . . . . . . . . . . . . . 107
F
FilterEngine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 251
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Flashers, Hazard Warning . . . . . . . . . . . . . . . . 104
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Fluid Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Dual Clutch Transmission . . . . . . . . . . . . . . 249
Dual Clutch Transmission LifeSystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Front Air Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Heated and Ventilated Seats . . . . . . . . . . . . 43
Lift System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Lift System Light . . . . . . . . . . . . . . . . . . . . . . . 87
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Economy, Driving for Better . . . . . . . . . . . 169
Filling a Portable Fuel Container . . . . . . . 229
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 228
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 228
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82