oil dipstick CHEVROLET CORVETTE GRAND SPORT 2019 Owners Manual

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
162 Driving and Operating
vehicle for racing or other
competitive driving. SeeCompetitive
Driving Mode 0203.
A manual transmission is
recommended for extended track
usage at higher ambient
temperatures. Consult the Track
Preparation Guide for additional
information. See your dealer.
Be sure to follow all service
procedures before driving the
vehicle at track events or
competitively.
Prior to each track event and again
before re-entering the public road
system, tighten the wheel nuts with
a torque wrench to the proper
torque specification. See Capacities
and Specifications 0326.Engine Sound Management
Setting
Caution
Do not place the vehicle in
Engine Sound Management –
Stealth mode. Damage could
result to exhaust valve actuators.
Engine Oil
Caution
If the vehicle is used for track
events and competitive driving,
the engine may use more oil than
it would with normal use. Low oil
levels can damage the engine.
Check the oil level often and
maintain the proper level. See
Engine Oil0232.
The engine is factory filled with
0W-40 dexos2 oil. For LT1 and LT4
engines only, 0W-40 dexos2 engine
oil is approved for both track and
street use. 15W-50 full synthetic engine oil may also be used for
track use, but after track use must
be changed back to 0W-40 dexos2
for street use. If 0W-40 dexos2 oil is
not available, 5W-30 dexos1 full
synthetic engine oil may be used for
street use. If 5W-30 dexos1 is used,
it must be changed to 0W-40
dexos2 or 15W-50 full synthetic
engine oil for track use.
For the LT5 engine, SAE 15W-50
full synthetic engine oil must be
used for track use, but after track
use must be changed back to
0W-40 dexos2 for street use.
Z51 Performance Package, Grand
Sport, Z06, and ZR1: Check the oil
level often during track events and
competitive driving and keep the
level at or near 0.5 L (0.5 qt) above
the upper mark that shows the
proper operating range on the
engine oil dipstick. After the
competitive driving, remove excess
oil so that the level on the dipstick is
not above the upper mark that
shows the proper operating range.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Driving and Operating 163
Stingray without Z51 Performance
Package: Additional oil fill above the
upper mark on the dipstick is not
recommended for track events or
other competitive driving. Check the
oil level often during racing or other
competitive driving and keep the
level at or near the upper mark that
shows the proper operating range
on the engine oil dipstick. After the
competitive driving, remove excess
oil so that the level on the dipstick is
not above the upper mark that
shows the proper operating range.
Fuel
LT1 Engine :93 octane (or higher)
unleaded gasoline is required.
LT4 Engine : 93 octane (or higher)
unleaded gasoline is required.
100 octane (or higher) unleaded
gasoline is recommended at the
track when temperatures are above
30 °C (86 °F) to maximize
powertrain performance and
improve longevity of components
within the powertrain. LT5 Engine :
93 octane (or higher)
unleaded gasoline is required.
100 octane (or higher) unleaded
gasoline is recommended to
maximize powertrain performance
and improve longevity of
components within the powertrain.
Caution
Some high octane fuels contain
additives and compounds that
may damage the vehicle and void
the vehicle warranty. See
Prohibited Fuels 0213.
Automatic Transmission Fluid
Transmission fluid should be
changed after every 15 hours of
track usage. Any transmission level
set or change should be performed
at your dealer.
Manual Transmission Fluid
Manual transmission fluid should be
changed after every 15 hours of
track usage.
Load Limit
Z51 Performance Package Only:
Limit vehicle load to the driver only,
with no other cargo. Inflate tires to
180 kPa (26 psi) and drive at a
maximum speed of 280 km/h
(174 mph).
Grand Sport, Z06, and ZR1 Only:
Limit vehicle load to the driver only,
with no other cargo. Inflate tires to
180 kPa (26 psi) and drive at a
maximum speed of 296 km/h
(184 mph).
Wheel Alignment
Caution
Using these wheel alignment
settings may cause excessive tire
wear. Only use these wheel
alignment settings for racing or
competitive driving. Excessive tire
wear is not covered under the
vehicle warranty.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
226 Vehicle Care
1.Passenger Compartment Air
Filter 0155 (Out of View).
2. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
3. Engine Compartment Fuse
Block 0259.
4. Engine Air Cleaner/Filter 0239.
5. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
6. Engine Oil Fill Cap. See “When
to Add Engine Oil” under
Engine Oil 0232.
7. Engine Oil Dipstick. See “Checking Engine Oil” under
Engine Oil 0232.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
228 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
230 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
232 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil 0232.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil 0232.
3. Passenger Compartment Air
Filter 0155 (Out of View).
4. Coolant Surge Tank and Pressure Cap.
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
5. Engine Compartment Fuse
Block 0259.
6. Engine Air Cleaner/Filter 0239.
7. Engine Cooling Fan (Out of View).
See Cooling System (Engine)
0 242 orCooling System (Aero
Panel) 0246 orCooling
System (Intercooler on LT4 and
LT5 Engines) 0247.
8. Brake Fluid Reservoir. See Brake Fluid 0250. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch 0239.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid
0 248.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
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” in this section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0237. .
Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil (Except
ZR1, Z06, Grand Sport, and
Stingray with Z51)
If the ENGINE OIL LOW–ADD OIL
message displays on the Driver
Information Center (DIC), check the
engine oil level right away.
Check the engine oil level regularly,
every 650 km (400 mi), especially
prior to a long trip. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview
0225 for the location.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 233
Follow these guidelines:
.To get an accurate reading, park
the vehicle on level ground.
Check the engine oil level after
the engine has been off for at
least two hours. Checking the
engine oil level on steep grades
or too soon after engine shutoff
can result in incorrect readings.
Accuracy improves when
checking a cold engine prior to
starting. Remove the dipstick
and check the level.
. If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is
warm, or at least 30 minutes if
the engine is not warm. Pull out
the dipstick, wipe it with a clean
paper towel or cloth, then push it
back in all the way. Remove it
again, keeping the tip down, and
check the level.When to Add Engine Oil
(Except ZR1, Z06, Grand Sport,
and Stingray with Z51)
If the oil is below the cross-hatched
area at the tip of the dipstick and
the engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for
an explanation of what kind of oil to
use. For engine oil crankcase
capacity, see Capacities and
Specifications 0326.
See Track Events and Competitive
Driving 0161 for additional
information on engine oil.
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
0 225 for the location of the engine
oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
234 Vehicle Care
Checking Engine Oil (ZR1, Z06,
Grand Sport, and Stingray
with Z51)
1. Engine Oil Dipstick
2. Engine Oil Fill Cap
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground.
The engine oil dipstick handle is a
loop. The dipstick is located on the
dry sump engine oil tank. See
Engine Compartment Overview
0225 for the location of the dry
sump engine oil tank. These vehicles have 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. With this
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 pan, reducing the
amount of oil held in the dry sump
tank and there could be no engine
oil at all showing 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 operatingtemperature. Do not add engine oil
based on cold engine dipstick
readings. The engine oil level on the
dipstick will also be inaccurate if
checked while the engine is running.
1. To obtain an accurate engine oil level reading, warm up the
engine to at least 80 °C (175 °
F). Cold oil will not give a
correct oil level reading.
2. Once the engine is warm, turn off the engine. Checking the oil
while the engine is running will
result in an incorrect oil level
reading.
3. Check the oil level between five and 10 minutes after the
engine is shut down.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12032182) - 2019 - crc - 5/8/18
Vehicle Care 235
4. Remove the dipstick from theexternal engine oil tank and
wipe it with a clean lint-free
paper towel or a cloth.
Re-insert the dipstick into the
external oil tank, pushing it all
the way in until it stops.
5. Remove the dipstick from the oil tank and read the level on
the cross-hatched area.
When to Add Engine Oil (ZR1,
Z06, Grand Sport, and Stingray
with Z51)
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 and then recheck the level. See
“Selecting the Right Engine Oil”
for an explanation of what kind of oil
to use. For engine oil crankcase
capacity, see Capacities and
Specifications 0326.
See Track Events and Competitive
Driving 0161 for additional
information on engine oil.
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
0 225 for the location of the external
engine oil tank 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 when through.
Changing Engine Oil and Filter
(ZR1, Z06, Grand Sport, and
Stingray with Z51)
The vehicle may have 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. Follow this
procedure closely when changing
the engine oil and filter.

Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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236 Vehicle Care
1. Engine Oil Drain Plugs
2. Seals
Steps to follow:1. Remove the two engine oil drain plugs from the bottom of
the engine oil pan. One drain
plug drains the external oil tank
via the oil transfer supply line.
The other drain plug drains
residual oil from the crankcase
sump. Allow the oil to drain.
2. Once the oil has been drained from the engine, remove the
engine oil filter and allow the oil
to drain. 3. Reinstall both drain plugs and
tighten them to 25 Y
(18 lb ft).
4. Replace the oil filter and tighten it three-quarters to one
turn after gasket contact. See
Maintenance Replacement
Parts 0323 for the correct filter.
5. Oil is filled through the opening in the top of the external
engine oil tank. Remove the oil
fill cap.
6. Add oil to the oil tank. See Capacities and Specifications
0326.
7. Install the oil fill cap and insert the dipstick, if removed.
8. Start the engine and let it run at idle for at least 15 seconds.
This will circulate the fresh
engine oil through the
lubrication system.
9. Shut off the engine and check the oil level as described under
“Checking Engine Oil (ZR1,
Z06, Grand Sport, and Stingray
with Z51).”
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See Recommended Fluids and
Lubricants 0321.
Specification
Use engine oils that meet the
dexos2 specification.
Engine oils that have been
approved by GM as meeting the
dexos2 specification are marked
with the dexos2 approved logo. See
www.gmdexos.com.