engine oil CHEVROLET CORVETTE 1994 4.G User Guide

Downloaded from www.Manualslib.com manuals search engine Comfort Controls and Audio Systems
Clean your tape player with a
wiping-action, non-abrasive cleaning
cassette
(GM Part No. 12344600), and
follow the directions provided with
it.
Cassettes are subject to wear and the
sound quality may degrade over time.
Always make sure that the cassette tape is
in good condition before you have your
tape player serviced.
. . .I18
Care of Your Compact Discs
Handle discs carefully. Store them in theil
original cases or other protective cases
and away from direct sunlight and dust.
U
the surface of a disc is soiled, dampen a
clean, soft cloth in a mild, neutral
detergent solution and clean it, wiping
from the center to
the edge.
Be sure never to touch the signal surface
when handling discs. Pick up discs by
grasping the outer edges or the edge of
the
hole and the outer edge.
Power Antenna Mast Care
Your power antenna will look its best and
work well if it’s cleaned from time to
time.
To clean the antenna mast:
1. Turn on the radio to raise the antenna.
2. Dampen a clean cloth with mineral
spirits or an equivalent solvent.
3. Wipe the cloth over the mast, removing any dirt.
4. Wipe the mast dry with a clean cloth.
5. Turn the radio off and on to make the
antenna go down and up.
If the antenna is still dirty, repeat the steps.

Downloaded from www.Manualslib.com manuals search engine begin to check traffic. Try to determine
where you expect to blend with the flow.
Try to merge into the gap
at close to the
prevailing speed. Switch on your turn
signal, check your mirrors and glance
over your shoulder as often as necessary.
Try to blend smoothly with the traffic
flow.
Once you are on the freeway, adjust your
speed to the posted limit or to the
prevailing rate if it’s slower. Stay in the
right lane unless you want to pass.
Before changing lanes, check your
mirrors. Then use your turn signal. Just
before you leave the lane, glance quickly
over your shoulder to make sure there
isn’t another vehicle in your “blind” spot.
Once you are moving on the freeway,
make certain you allow a reasonable
following distance. Expect to move
slightly slower at night.
When you want to leave the freeway,
move to the proper lane well
in advance.
If you miss your exit do not, under any
circumstances, stop and back up. Drive on
to the next exit.
The exit ramp can be curved, sometimes
quite sharply. The exit speed is usually
posted. Reduce your speed according to your speedometer, not
to your sense of
motion. After driving for any distance at
higher speeds, you may tend to think you
are going slower than you actually are.
Before Leaving on a Long Trip
Make sure you’re ready. Try to be well
rested. If you must start when you’re not
fresh
- such as after a day’s work -
don’t plan to ,make too many miles that
first part
of the journey. Wear comfortable
clothing and shoes you can easily drive
in.
Is your vehicle ready for a long trip? If
you keep it serviced and maintained, it’s
ready to go. If it needs service, have it
done before starting out. Of course, you’ll
find experienced and able service experts
in Chevrolet dealerships all across North
America. They’ll be ready and willing to
help if you need
it.
Here are some things you can check
before a trip:
Windshield Washer Fluid: Is the
reservoir full? Are all windows clean
inside and outside?
0 Wiper Blades: Are they in good
shape?
0
0
Fuel, Engine Oil, Other Fluids:
Have you checked all levels?
Lights: Are they all working? Are the
lenses clean?
Tires: They are vitally important to a
safe, trouble-free trip.
Is the wead
good enough for long-distance
driving? Are the tires all inflated to
the recommended pressure?
Weather Forecasts: What’s the
weather outlook along your route?
Should you delay your trip
a short
time to avoid a major storm system?
Maps: Do you have up-to-date maps?
Highway Hypnosis
Is there actually such a condition as
“highway hypnosis”? Or is it jugt plain
falling asleep at the wheel? Call it
highway hypnosis, lack of awareness, or
whatever.
There is something about an easy stretch
of road with the same scenery, along with
the hum of the tires on the road, the drone
of the engine, and the rush of the wind
against the vehicle that can make you
sleepy. Don’t let it happen to you! If it
does, your vehicle can leave the road in
less than a second, and you could crash
and be injured.
135

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
F
Cooling System
When you decide it’s safe to lift the hood,
here’s what you’ll see on the
LT5 engine:
1. Coolant recovery tank
2. Coolant high fill reservoir with
3. Electric engine fans
pressure cap
. . -152
If
the coolant inside the coolant recovery
tank is boiling, don’t do anything else
until it cools down.
When it is cool, remove the coolant
recovery tank cap and look at the dipstick.
The coolant level should be at or above
“COLD.” If it isn’t, you may have a leak
in the radiator hoses, heater hoses,
radiator, water pump or somewhere else
in the cooling system.
I NOTICE:
I
Engine damage from running your
engine without coolant isn’t covered
by your warranty.
If there seems to be no leak, check
to see
if the electric engine fans are running.
If the engine is overheating, both fans
should be running.
If they aren’t, your
vehicle needs service.

Downloaded from www.Manualslib.com manuals search engine Here you will find information
about the care of your Corvette
.
This part begins with service
and fuel information. and then it
shows how
to check important
fluid and lubricant levels
. There
is also technical information
about your vehicle. and a section devoted
to its
appearance care
.
Part 6
Service & Appearance Care
Service ........................................................
Fuel ..........................................................
Checking Things under the Hood ...................................
HoodRelease .................................................
Engineoil .................................................
Aircleaner ........................... ...................
Automatic Transmission Fluid ..................................
Manual Transmission Fluid ......................................
Hydraulic Clutch ...............................................
RearAxle ....................................................
Enginecoolant ................................................
Power Steering Fluid ...........................................
Windshield Washer Fluid ........................................
Brake Master Cylinder ..........................................
Battery ......................................................
Bulb Replacement ...............................................
Windshield Wiper Blades ..........................................
Tires ..........................................................
Appearancecare ................................................
Appearance Care Materials Chart ...................................
Vehicle Identification Number (VIN) ................................
Service Parts Identification Label ...................................
Add-on Electrical Equipment ......................................
Fuses and Circuit Breakers ........................................
Replacement Bulbs ..............................................
Capacities and Specifications ...................................
LoadingYourVehicle ............................................
172
173
175
175
178
182 184
186
187
188
188
191
192
193
195
195
202
202
204
210
217
218
218
218
219
223
224
171 ..

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
Fuels in Foreign Countries
If you plan on driving in another country
outside the
U.S. or Canada, unleaded
fuel may be hard to find.
Do not use
leaded gasoline. If you use even one
tankful, your emission controls won’t
work well or at all. With continuous use,
spark plugs can get fouled, the exhaust
system can corrode, and your engine oil
can deteriorate quickly. Your vehicle’s
oxygen sensor will be damaged. All of
that means costly repairs that wouldn’t
be covered by your warranty.
To check on fuel availability, ask an auto
club, or contact a major oil company that
does business
in the country where you’ll
be driving.
You can also write us at the following
address for advice. Just tell
us where
you’re going and give your Vehicle
Identification Number (VIN).
General Motors Overseas Distribution
North American Export Sales
(NAES)
1908 Colonel Sam Drive
Oshawa, Ontario LlH 8P7
Corporation
. . .174
Filling
Your Tank
The cap is under a hinged door on the rear
of your vehicle. While
refueling, place the cap in the
indent to the left of the filler neck.
To take
off the cap, turn it slowly to the
left (counterclockwise).

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
When you open the hood, you'll see:
1. Hydraulic Clutch Fluid Reservoir (if
2. Brake Fluid Reservoir
equipped)
. . .I76
1
Before closing the hood, be sure all
the filler caps are on.
'*?-
5.7L LTI (Code P)
3. Battery
4. Electrical Engine Fan
5. Air Cleaner
6. Coolant Recovery Tank
7. Power Steering Fluid Reservoir
8. Engine Oil Fill Cap
9. Engine Oil Dipstick
10. Windshield Washer Fluid Reservoir
11. Coolant High Fill Reservoir
12. Automatic Transmission Dipstick
(if equipped)
I

Downloaded from www.Manualslib.com manuals search engine r
k
"1
5.7L LT5 (Code J)
When you open the hood, you'll see:
1. Hydraulic Clutch Fluid Reservoir 5. Air Cleaner
2. Brake Fluid Reservoir 6. Coolant Recovery Tank
3. Battery 7. Power Steering Fluid Reservoir
4. Electric Engine Fan 8. Engine Oil Fill Cap Before closing
the hood, be
sureall
the filler caps are on. . ..
'., , ,.
9. Engine Oil Dipstick
10. Windshield Washer Fluid Reservoir
11. Coolant High Fill Reservoir
177..

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
Then release the hood strut by moving it
to the centered position and lowering the
hood. Lower the hood until it is about
12
inches (300 mm) above the engine, then
release it.
- - 178
I
!
5.7L LTl (Code P)
Engine Oil
If you have the LTl engine, it’s a good
idea to check your engine oil level every
time you get fuel. In order to get an
accurate reading, the oil must be warm
and the vehicle must be on level ground.
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. d
tl
It
rain
le oi
:vel.
5.7L LT5 (Code J)
f you have the LT5 engine, the best time
3 check your engine oil is when the
ngine is cold. If you run the engine, the
ngine oil won’t drain back into the pan
ast enough. Give the oil two hours to
back into the oil pan. If you don’t,
1 dipstick might not show the actual

Downloaded from www.Manualslib.com manuals search engine - ..f’.’.*.‘.*.I.
To Check Engine Oil
Pull out the dipstick and clean it with a
paper towel or cloth, then push it back
in
all the way. Remove it again, keeping the
tip lower.
5.7L LTl (Code E
When to Add Oil:
If the oil is at or below the “ADD’ mark,
you’ll need to add some oil. But you musl
use the right kind. This section explains
what kind
of oil to use. For crankcase
capacity, see “Capacities and
Specifications” in the Index.
NOTICE:
Don’t add too much oil. If your
engine has
so much oil that the oil
level gets above the upper mark that
shows the proper operating range,
your engine could be damaged.
5.7L LT5 (Code J)
Just fill it enough to put the level
somewhere
in the proper operating range.
Push the dipstick all the way back
in
when you’re through.
What Kind of Oil to Use
Look for two things:
GM4718M
The Corvette engine requires a special
oil meeting GM Standard GM47 18M.
Oils meeting this Standard may be
identified as synthetic. However, not
all SYNTHETIC oils will meet this
GM Standard. You should look
for
and use only an oil that meets GM
Standard GM47 18M.
179 ...

Downloaded from www.Manualslib.com manuals search engine Service and Appearance Care
I
NOTICE:
If you use oils that don’t have the
GM4718M Standard designation,
you can cause engine damage not
covered by your warranty.
0 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.
Do
not use other viscosity oils such as
SAE 20W-50.
. .I80
Recommended SAE Viscosity
Grade Engine Oils
For best fuel economy and cold starting,
.select the lowest SAE viscosity grade oil
for the expected temperature range.
HOT
WEATHER
/
WEATHER
r
COLD
WOK FOR
LABELS
ONE OFTHESE @
1
-r
SAEZ-30
PREFERRED
Oils meeting these requirements should
also have either one or both of these
symbols
on the container.
You should look for these
on the oil
container, and use
o& those oils that
are identified as meeting GM Standard
4718M and have either the “starburst”
symbol or the
API doughnut symbol
with either the
SH or the SG designation.
Your Corvette engine is filled at the
factory with a Mobil
l@ synthetic oil,
which meets all requirements for your
vehicle.