2015 CHEVROLET CORVETTE GRAND SPORT Owners Manual

Black plate (10,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
10-10 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil on page 10-12.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil on
page 10-12.
3. Passenger Compartment Air
Filter on page 8-5 (Out of View).
4. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10-24.
5. Engine Compartment Fuse
Block on page 10-39.
6. Engine Air Cleaner/Filter on
page 10-20.
7. Engine Cooling Fan (Out of View). See Cooling System
(Aero Panel) on page 10-23 or
Cooling System (Engine) on
page 10-22.
8. Brake Fluid Reservoir. See “Brake Fluid” underBrakes on
page 10-29. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch on page 10-19.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10-28.

Black plate (11,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
Vehicle Care 10-11
6.2L LT4 V8 Engine (with Z06–Dry Sump Engine Oil Tank)

Black plate (12,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
10-12 Vehicle Care
1. Engine Oil Dipstick. See“Checking Engine Oil” under
Engine Oil on page 10-12.
2. Dry Sump Engine Oil Tank Fill Cap. See “Changing Engine Oil
and Filter” Engine Oil on
page 10-12.
3. Passenger Compartment Air
Filter on page 8-5 (Out of View).
4. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10-24.
5. Engine Compartment Fuse
Block on page 10-39.
6. Engine Air Cleaner/Filter on
page 10-20.
7. Engine Cooling Fan (Out of View). See Cooling System
(Aero Panel) on page 10-23 or
Cooling System (Engine) on
page 10-22.
8. Brake Fluid Reservoir. See “Brake Fluid” underBrakes on
page 10-29. 9. Clutch Master Cylinder
Reservoir (If Equipped). See
Hydraulic Clutch on page 10-19.
10. Windshield Washer Fluid Reservoir. See “Adding Washer
Fluid” under Washer Fluid on
page 10-28.
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:
.Always 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 on page 10-18.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil (Except
Z51 and Z06)
If the ENGINE OIL LOW–ADD OIL
message displays on the Driver
Information Center (DIC), check the
engine oil level right away. See
Engine Oil Messages on page 5-37.
Check the engine oil level regularly.
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.
SeeEngine Compartment Overview
on page 10-7 for the location of the
engine oil dipstick.

Black plate (13,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
Vehicle Care 10-13
Obtaining an accurate oil level
reading is essential:
1. If the engine has been runningrecently, turn off the engine and
check within five and 10 minutes
of shutoff. Checking the oil level
too soon after engine shutoff will
not provide an accurate oil level
reading.
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
2. Pull the dipstick and 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 Z51 and Z06)
If the oil is below the cross-hatched
area at the tip of the dipstick, add
1 L (1 qt) of the recommended oil
and then recheck the level. See
“Selecting the Right Engine Oil” in
this section for an explanation of
what kind of oil to use. For engine
oil crankcase capacity, see
Capacities and Specifications on
page 12-2.
See Track Events and Competitive
Driving on page 9-5 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 you find that you
have an oil level 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. You should drain
out the excess oil or limit driving
of the vehicle and seek a service
professional to remove the
excess amount of oil.
See Engine Compartment Overview
on page 10-7 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.

Black plate (14,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
10-14 Vehicle Care
Checking Engine Oil
(Z51 and Z06)
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 on
page 10-7for 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 operating
temperature. 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.

Black plate (15,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
Vehicle Care 10-15
{Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
4. Remove the dipstick from the external 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
(Z51 and Z06)
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 on page 12-2.
See Track Events and Competitive
Driving on page 9-5 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 you find that you
have an oil level 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. You should drain
out the excess oil or limit driving
of the vehicle and seek a service
professional to remove the
excess amount of oil.
See Engine Compartment Overview
on page 10-7 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.

Black plate (16,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
10-16 Vehicle Care
Changing Engine Oil and Filter
(Z51 and Z06)
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.
1. Engine Oil Drain Plugs
2. Seals
Steps to follow:
1. Remove the two engine oil drainplugs 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 to 3/4 to 1 turn after gasket
contact. See Maintenance
Replacement Parts on
page 11-13 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 on
page 12-2. 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
(Z51 and Z06).”
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 on page 11-12.
Specification
Ask for and use engine oils that
meet the dexos1™ specification.
Engine oils that have been
approved by GM as meeting the
dexos1 specification are marked
with the dexos1 approved logo. See
www.gmdexos.com.

Black plate (17,1)Chevrolet Corvette Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576293) - 2015 - crc - 6/17/14
Vehicle Care 10-17
GM recommends Mobil 1®engine
oils that show the dexos1 approved
logo for its dry sump equipped
engines.
{Caution
Failure to use the recommended
engine oil can result in engine
damage not covered by the
vehicle warranty. Check with your
dealer or service provider on
whether the oil is approved to the
dexos1 specification.
Viscosity Grade
Use SAE 5W-30 viscosity grade
engine oil. Cold Temperature Operation: In an
area of extreme cold, where the
temperature falls below
−29°C (−20°
F), an SAE 0W-30 oil may be used.
An oil of this viscosity grade will
provide easier cold starting for the
engine at extremely low
temperatures. When selecting an oil
of the appropriate viscosity grade,
always select an oil of the correct
specification. See “Specification”
earlier in this section for more
information.
For track events or competitive
driving, use Mobil 1®15W-50 engine
oil. An instrument cluster warning
light will be illuminated at high oil
temperatures. See Driver
Information Center (DIC) on
page 5-26.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the
dexos1™ 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, be sure to 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.