1993 CHEVROLET CORVETTE Owners Manual

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1 LT5 Engine (CODEJ)
1. Hydraulic Clutch Fluid Reservoir
2. Battery
3. Brake Fluid Reservoir
4. Power Steering Fluid Reservoir
5. Air Cleaner
6. Coolant Recovery Tank
7. Engine Oil Fill Cap
8. Engine Oil Dipstick
9. Coolant High Fill Reservoir
IO. Windshield Washer Fluid Reservoir
.I. 248

Downloaded from www.Manualslib.com manuals search engine Underhood Lights
Leaving your hood open and your
underhood lights on can drain your
battery.
If you need to keep the hood
open for an extended period
of time,
remove the Underhood Lights Fuse.
This 1O-amp fuse is located under the
hood on the left-hand marker light
assembly. See the
Index under Fuses &
Circuit Breakers.
Engine Oil
It's a good.idea to check pur engine oil
level every time you get fuel. In order to
get
an accurate reading, the vehicle
must be on level
ground.
If you have the LTl engine, the best
time
to check your engine oil is when
the
engine is warn. If the engine is
mnning, the engine oil won't drain back
into the pan.
Turn off the engine and
give the oil a few minutes to drain back
into the-oil
pan. If you don't, the oil
dipstick might not show the actual
level. If
you have a ZR-1, the best time to
chegk your engine oil is when
the
engine
is cold. If you run the engine, the
engine oil
won't drain back into the pan
fast enough.
Give the oil two hours to
drain
back into the oil pan. If you don't,
the oil dipstick might not
show the
actual level.
249 .

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Engine Oil (CONI-.)
To Check Engine Oil:
Pull out the dipstick and clean it with a
paper towel or a cloth, then push it back
in all the way. Remove it again, Beeping
the
tip lower.
LTI Engine: Checking Engine Oil
L15
Engine: Checking Engine Oil
When to Add Oil:
*If the oil is at or below the ADD line,
you'll need to
add some oil.. But you
must use the right kind. This section
explains what kind of ail.to use. For
crankcase capacity, see the Index under
Capacities and Specifications.

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Just fill it enough to put' the level
Somewhere in the proper operating
parge-. Push the dipstick all the-way
back in when you're. through.
Your vehic1.e has- a LOW OIL light-on
the Driver InfomaAion Center that
canes on and stays on if your oil. is '/z to
1% quarts low (see t-he Index tilid&
Low Oil Ljght). Do not wait until this
light comes on to check your oil level.
This light is an added reminder
only-you should check your oil level
regularly.
LT1 Engine: Adding .Engine, Oil
CT5 Engine: Adding Engine Oil
What Kind of Oil To Use
'Lo& fcrr Three Things:
GM4718M
Your Corvette engine requires a
special. oil me,et&g GM Standard
GM4718M. Oils meeting this
Standard may be identified as
synthetic,
and should also. be
identified as API Service SG.
However, not all SynthetkAPI
Service SG oils will meet this GM
Standard. You should lo& for and
use only an .oil that meets GM
Stand;ird GM4718M.
25 I

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SAE 5w-30
As shown in the viscosity chart, SAE
5W-30 is best for your vehicle.
However,
you can use SAE 1OW-30 if
it’s going to be 0°F (-18°C) or above.
These numbers on an oil container
show its viscosity, or thickness.
Energy Conserving I1
Oils with these words on the
, container will help you save fuel.
This doughnut-shaped logo (symbol) is
used on most oil containers to ,help you
select the correct oil.
You should look for this on the oil
container, and use only those oils that
display the logo.
Your Corvette engine is filled at the
factory with a Mobil l@ synthetic oil,
which meets all requirements for your
vehicle.
= 252

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Substitute Oil (LTI Engine Only)
When adding .oil to maintain engine oil
level, if an oil meeting GM St.aidard
GM4718M is not available, you can use
oil designated either SAE 5W-30 API
Service SG at all temperatures, or SAE
1OW-30 API Service SC at temperatures
above
0°F (-18°C) : This oil should not
be used for an oil change.
Substitute. 01 (LTS Engine Only)
When adding oil to maintain engine oil
level,
if an oil meeting GM Standard
GM4718M is not available, you can use
oil designated. SAE 1OW-30 API Service
SG at all temperatures. This oil should
not be used for an oil change.
Engine 0il.Addifives
Don't add anything to your oil.>Your
Chemolet dealer is ready to
ad a ,'se if
you think something should be ,added. I
When to Change Engine Oil
See if my one of these is true !€or-you:
Most trips are less than 4 miles
(6 lm).
It's below freezing outside and most
trips are less than
10 miles (16 km) .
TEie engine is at low speed most of the
time
(as in stop-and-go traEc).
Most trips are through dusty places.
If any one of these is true for your
vehicle, you need to change
your oil
and filter every 3,000 miles
(5 000 km) or 3 months-whichever
comes first. (See
the Index under
Engine Oil Life Monitor.)
If none of them.is true, change the oil
every 7,500 miles (12 500 lun) or 12
months-whichever comes first.
Change the filter
at the first oil change
and
at every other oil change after that.
(See the Index under Engine Oil Life
Monitor.)

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Sevvice & Appearance Care
Engine Block Heater
(LTl ENGINE, CANADA ONLY)
An engine block heater can be a big
help if you have to park outside in very
cold weather, 0°F (-18°C) or colder. If
your vehicle has an engine block heater,
see the index under Engine Block
Heater.
154
What to Do with Used, Oil Air Cleaner
A
Used engine- oil contains.
things that have caused skin ..
,cancer in laboratory animals. Don't
let used oil stay.on your .skin for
very long. Clean you skin and nails
with soap and water, or a good
hand cleaner. Wash or properly
throw away ciuthing or rags
containing used
engine oil.
Refer to the Maintenance Schedule to
determine when
to replace the air filter.
Used
oil can be a real threat to the
environment. If you change your own
oil, be sure to drain all free-flowing oil
from the filter before disposal. Don't
ever dispose of oil by pouring it on the
ground, into sewers, or into streams or
bodies
of water. Instead, recycle it by
taking it to a place that collects used oil.
If you have a problem properly
disposing
of yo-ur used oil, ask your:
dealer, a service station or a local
recycling center €or
help.
L
;ee the Index under Scheduled
taintmame. Services.
I
CAUTION I

Downloaded from www.Manualslib.com manuals search engine I. Unscrew the three. lambs.
2.. Pull -the manifold forward arid up-
3. Pull off -the cover -and removethe
4. Reverse steps -1-3 to reas-semble.
filter.
Make sure-the
short hob is returned
to the center position when you are
.-t
- finished. -- I.-, . ..E%. ,