2020 CHEVROLET CORVETTE Owner's Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
216 Vehicle Care
1. Engine Cooling Fan (Out ofView). See Cooling System
0 226.
2. Engine Air Cleaner/Filter (Under Access Panel). See
Engine Air Cleaner/Filter 0224.
3. Dry Sump Engine Oil Tank and Fill Cap. See Engine Oil0218.
4. Engine Oil Dipstick. See Engine Oil 0218.
5. Coolant Surge Tank and Pressure Cap. See Cooling
System 0226.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 217
6.2L V8 Engine (Convertible)

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
218 Vehicle Care
1. Engine Cooling Fan (Out ofView). See Cooling System
0 226.
2. Engine Air Cleaner/Filter (Under Access Panel). See
Engine Air Cleaner/Filter 0224.
3. Coolant Surge Tank and Pressure Cap. See Cooling
System 0226.
4. Dry Sump Engine Oil Tank and Fill Cap. See Engine Oil0218.
5. Engine Oil Dipstick. See Engine Oil 0218.
Engine Oil
To ensure proper engine
performance and long life, pay
careful attention to engine oil.
Follow these important steps:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
later in this section. .
Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” later in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0221.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking the Engine Oil
1. Engine Oil Dipstick
2. Engine Oil Fill Cap
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. To get an
accurate reading, the vehicle must
be parked on a level ground.
The engine oil dipstick handle is a
loop. See Engine Compartment
Overview 0215 for the location.
The vehicle has a racetrack-ready
dry sump engine lubrication system.
This high performance system
operates differently than a standard
engine lubrication system and
requires a special procedure when
checking the engine oil level. Follow
this procedure closely.
The engine oil level must be
checked when the engine is warm.
Cold oil level in the dry sump tank
may not indicate the actual amount
of oil in the system. Engine oil is
contained in an external tank,
separate from the engine. Under
normal operating conditions, the oil
pan under the engine does not store
any oil. If the vehicle has been
parked for an extended period
without the engine being started,
some oil will seep back into the oil

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12470550) - 2020 - CRC - 4/23/20
Vehicle Care 219
pan. This will reduce the amount of
oil held in the dry sump tank and
there could be no engine oil on the
dipstick. This is normal since the
dipstick is designed to read the
engine oil level only after the engine
has run long enough to reach
normal operating temperature. Do
not add engine oil based on cold
engine dipstick readings. The
engine oil level on the dipstick must
be checked while the engine is
running at idle.
To check the engine oil:1. Turn the engine on and let it warm up to at least 80 °C (175
°F).
2. Once the engine is warm, check the oil while the engine
is running at idle.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle. 3. Remove the dipstick and wipe
it with a clean lint-free paper
towel or a cloth. Re-insert the
dipstick and push it all the way
in until it stops.
4. Remove the dipstick again and read the level on the
cross-hatched area.
5. Turn the engine off.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick, add
1 L (1 qt) of the recommended oil
through the oil fill cap opening in the
oil tank fill tube and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for
the type of oil to use. For engine oil
crankcase capacity, see Capacities
and Specifications 0299.
Caution
Do not add too much oil. Oil
levels above or below the
acceptable operating range
shown on the dipstick are harmful
to the engine. If the oil level is
above the operating range (i.e.,
the engine has so much oil that
the oil level gets above the
cross-hatched area that shows
the proper operating range), the
engine could be damaged. Drain
the excess oil or limit driving of
the vehicle, and seek a service
professional to remove the
excess oil.
See Engine Compartment Overview
0 215 for the location of the external
engine oil tank dipstick and fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back into the oil tank tube when
finished.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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220 Vehicle Care
Changing the Engine Oil and
Filter
The vehicle requires a special
procedure when changing the
engine oil and filter. Follow this
procedure closely.
1. Engine Oil Drain Plug
2. O-ring Seal
3. Engine Oil Filter
To change the engine oil and filter:1. Run the engine at idle for about 20 seconds to return all of the
oil back into the dry sump
oil tank. 2. Turn the engine off prior to
draining the oil.
3. Remove the engine oil drain plug from the bottom of the
engine oil pan. Drain plug
removal will let the oil drain
from the external oil tank and
residual oil from the crankcase
sump. Allow the oil to drain.
4. Remove the engine oil filter and allow the oil to drain.
5. Inspect the drain plug O-ring seal and replace if it is
damaged. Reinstall the drain
plug into the oil pan and tighten
it to 25 N.m (18 lb ft).
6. Replace the oil filter and tighten it three-quarters to one
turn after the gasket makes
contact. See Maintenance
Replacement Parts 0296 for
the correct filter.
7. Remove the oil fill cap from the external engine oil tank.
Add oil to the oil tank through
the opening in the fill tube. See
Capacities and Specifications
0299. 8. Install the oil fill cap and insert
the dipstick, if removed.
{Warning
To help avoid personal injury and/
or engine damage, always install
the engine oil dipstick and oil fill
cap until fully seated to a stop.
If not fully seated, oil could
escape on to hot exhaust parts
and cause a fire.
9. Start the engine and check the oil level as described under
"Checking the Engine Oil."
previously in this section.
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and the viscosity
grade. See Recommended Fluids
and Lubricants 0295.
Specification
Use engine oils that meet the
dexos2 specification.

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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
222 Vehicle Care
This vehicle has a racetrack-ready
dry sump engine lubrication system.
This high performance system
operates differently than a standard
engine lubrication system and
requires a special procedure when
changing the engine oil and filter.
SeeEngine Oil 0218.
When the system has calculated
that oil life has been diminished, it
indicates that an oil change is
necessary. A CHANGE ENGINE
OIL SOON message comes on.
Change the oil as soon as possible
within the next 1 000 km (600 mi).
It is possible that, if driving under
the best conditions, the oil life
system may not indicate that an oil
change is necessary for up to a
year. The engine oil and filter must
be changed at least once a year
and, at this time, the system must
be reset. Your dealer has trained
service people who will perform this
work and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level. If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 mi)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. To reset the
system:
1. Scroll through the DIC Info Pages menu until the
REMAINING OIL LIFE
percentage is displayed. See
Driver Information Center (DIC)
0108.
2. Press and hold SEL on the DIC while the Oil Life display is
active. The oil life will change
to 100%.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not reset. Repeat the
procedure.
Dual Clutch Transmission
Fluid
How to Check Dual Clutch
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to the
dealer and have it repaired as soon
as possible.
The vehicle is not equipped with a
transmission fluid level dipstick.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at the dealer. Contact the
dealer for additional information or
the procedure can be found in the
service manual. To purchase a
service manual, see Publication
Ordering Information 0311.

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Vehicle Care 223
Caution
Use of the incorrect transmission
fluid may damage the vehicle,
and the damage may not be
covered by the vehicle warranty.
Always use the correct
transmission fluid. See
Recommended Fluids and
Lubricants0295.
Change the fluid and filter at the
proper intervals. See Maintenance
Schedule 0286. Be sure to use the
correct fluid. See Recommended
Fluids and Lubricants 0295.
Dual Clutch Transmission
Fluid Life System
When to Change the Dual
Clutch Transmission Fluid
This vehicle has a computer that
indicates when to change the
transmission fluid. This is based on
a combination of factors which
include temperature and miles
driven. Based on driving conditions, the mileage at which a fluid change
is indicated can vary considerably.
For the fluid life system to work
properly, the system must be reset
every time the fluid is changed.
When the system has calculated
that fluid life has been diminished, it
indicates that a fluid change is
necessary. A CHANGE
TRANSMISSION FLUID SOON
message comes on. Change the
fluid as soon as possible within the
next 1 000 km (600 mi). Failure to
change transmission fluid at
required intervals could lead to
suboptimal transmission
performance. Your dealer has
trained service technicians who will
change the fluid and reset the
system. If the system is ever reset
accidentally, the fluid must be
changed at 72 000 km (45,000 mi)
since the last fluid change.
How to Reset the Dual Clutch
Transmission Fluid Life
System
Reset the system whenever the
transmission fluid is replaced so that
the system can calculate the next
transmission fluid change.
To reset:
1. Place the vehicle in P (Park).
2. Select the Oil & Fluid Life page under the Maintenance DIC
menu. See Driver Information
Center (DIC) 0108.
3. Press the thumbwheel under the Oil & Fluid Life page to
move to the Reset/Disable
display area. Select Reset
Transmission Fluid with the
thumbwheel scroll then press
the thumbwheel. Then press
Yes to confirm the reset.
4. When the Transmission Fluid Life System is successfully
reset, 100% Transmission Fluid
Life will be displayed.