oil additives CHEVROLET CORVETTE 2020 Owner's Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
152 Driving and Operating
Caution
Some high octane fuels contain
additives and compounds that
may damage the vehicle and void
the vehicle warranty. See
Prohibited Fuels0205.
Dual Clutch Transmission
Fluid
The transmission fluid and external
filter should be changed after every
24 hours of track usage. If prompted
by the transmission fluid life monitor
that remaining fluid life is low, the
fluid and external filter should be
changed as soon as possible.
Add an additional 2 L (2 qt) of DCT
transmission fluid prior to track
usage. It is not required to remove
the additional 2 L (2 qt) of DCT fluid.
Any transmission level set or
change should be performed at your
dealer.
Brakes
Brake Fluid
Replace existing brake fluid with a
qualified high performance 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.
Brake Fade Warning Assist
The Brake Fade Warning Assist
system monitors the performance of
the brake system. If the system
detects brake fade, or if the brake
fluid is near the boiling point, the
driver will be alerted. The Brake Fade Warning Assist
system is designed for use with the
factory-installed brake pads or
GM-approved replacement pads.
If the brake pads on the vehicle
need to be replaced, use
GM-approved brake pads. If this is
not done, the brake fade warning
system may not function properly.
Stage 1 :
The Driver Information
Center (DIC) displays a “Reduce
Braking to Avoid Overheating”
message and brake pedal effort and
travel is increased. When the
message displays, the driver should
decrease brake pedal pressure.
Stage 2 : The Driver Information
Center (DIC) displays a “Brakes
Overheated Service Now” message
that the brake fluid temperature is
excessive and is about to boil. The
system increases brake pedal effort
and travel, and will also limit vehicle
speed. The driver should
immediately start a cool down lap if
on the track. If this message
displays, take the vehicle to be
serviced at your dealer.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Driving and Operating 205
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
(MMT), which can damage
the emissions control
system and spark plugs.
(Continued)
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
Fuels 0205.
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
0 98.
{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.
(Continued)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Vehicle Care 221
Engine oils that have been
approved by GM as meeting the
dexos2 specification are marked
with the dexos2 approved logo. See
www.gmdexos.com.
GM recommends Mobil 1 engine
oils that show the dexos2
approved logo.
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.
Viscosity Grade
Use SAE 0W-40 viscosity grade
engine oil. When selecting an oil of the
appropriate viscosity grade, it is
recommended to select an oil of the
correct specification. See
“Specification”
previously in this
section.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the
dexos2 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, 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 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.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
328 Index
Electrical SystemFuses and Circuit Breakers . . . 239
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 239
Overload . . . . . . . . . . . . . . . . . . . . . 239
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 242
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . 106
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 317
Engine Air Cleaner/Filter . . . . . . . . . . . . . 224
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 102
Compartment Overview . . . . . . . 215
Coolant Temperature Gauge . . . . 99
Cooling System . . . . . . . . . . . . . . . 226
Drive Belt Routing . . . . . . . . . . . . 301
Exhaust . . . . . . . . . . . . . . . . . . . . . . 170
Oil Life System . . . . . . . . . . . . . . . 221
Oil Pressure Light . . . . . . . . . . . . 107
Overheating . . . . . . . . . . . . . . . . . . 230
Power Messages . . . . . . . . . . . . . .115
Running While Parked . . . . . . . . 171
Starting . . . . . . . . . . . . . . . . . . . . . . . 166
Engine Air Filter Life System . . . . 224
Engine Compartment Lamp . . . . . 129 Entry Lighting . . . . . . . . . . . . . . . . . . . 130
Event Data Recorders . . . . . . . . . . 314
Exit Lighting . . . . . . . . . . . . . . . . . . . . 130
Extended Parking . . . . . . . . . . . . . . . 169
Extender, Seat Belt . . . . . . . . . . . . . . 61
Exterior Lamp Controls . . . . . . . . . 125
Exterior Lamps Off Reminder . . . 126
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 131
F
Filter,Engine Air Cleaner . . . . . . . . . . . 224
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 126
Flashers, Hazard Warning . . . . . . 128
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 267
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 282
Fluid Brakes . . . . . . . . . . . . . . . . . . . . . . . . 233
Dual Clutch Transmission . . . . 222
Dual Clutch TransmissionLife System . . . . . . . . . . . . . . . . . 223
Washer . . . . . . . . . . . . . . . . . . . . . . . 231
Folding Mirrors . . . . . . . . . . . . . . . . . . 30
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 312
Front Air Dam . . . . . . . . . . . . . . . . . . 164
Front Lift System . . . . . . . . . . . . . . . 191 Front Lift System Light . . . . . . . . . . 103
Front Seats
Heated and Ventilated . . . . . . . . . . 53
Front Storage . . . . . . . . . . . . . . . . . . . . 83
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 205
Economy, Driving for Better . . . 146
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 207
Filling the Tank . . . . . . . . . . . . . . . 205
Foreign Countries . . . . . . . . . . . . 205
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Management, Active . . . . . . . . . . 169
Prohibited Fuels . . . . . . . . . . . . . . 205
Recommended . . . . . . . . . . . . . . . 204
Top Tier . . . . . . . . . . . . . . . . . . . . . . 204
Fuses Fuses and Circuit Breakers . . . 239
Instrument Panel FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 239
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 242
G
Garage Door Opener . . . . . . . . . . . 121Programming . . . . . . . . . . . . . . . . . 121
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 237