oil temperature CHEVROLET CORVETTE 1995 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Engine Power Switch (ZR-1)
The LT5 engine in your
ZR-1 has two sets of
intake runners and fuel
injectors. The primary set
can be run alone for
normal engine power, or
both sets can be used for
full engine power.
Full power gives you extra power for highway touring
and off-road sports use and reserve power for passing.
With normal power, you’ll notice less engine and
exhaust noise. To
change the power setting, put your engine power key
into the switch. Turn the key to the setting
you want and
let go. The key will return to the center position.
Your ZR-1 is able to run at full power under the
following conditions:
0 The engine coolant and oil temperatures are greater
than
68°F (20°C) but less than 302°F (150°C).
System voltage is greater than ten volts.
The SERVICE ENGINE SOON light is not on.
You can switch the setting at engine speeds up to
4,000 rpm. When you select the FULL setting, a light
near the switch will come on.
It should go out when you
change back to the NORMAL setting. When you turn
the ignition off, the setting will go back to normal
power.
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Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Service
Engine Soon Light)
SERVICE
0
SOON
I
A computer monitors
operation
of your fuel,
ignition and emission
control systems. This amber
light should come on when
the ignition is on, but the
engine is not running, as a
check to show you it is
working.
If it does not come
on at all, have it fixed right away. If
it stays on, or it comes on while you are driving, the
computer is indicating that you have
a problem. You
should take your vehicle in for service soon.
NOTICE:
If you keep driving your vehicle with this light on,
after
a while the emission controls won’t work as
well, your fuel economy won’t be as good and your
engine may not
run as smoothly. This could lead to
costly repairs not covered by your warranty.
Engine Oil Pressure Gauge
-1
OIL
PRESS
PSI
The engine oil pressure gauge shows the engine
oil pressure in psi (pounds per square inch) or
kPa (kilopascals) when the engine is running. Oil
pressure should be
20 to 80 psi (140 to 550 Ea). It
may vary with engine speed, outside temperature and oil
viscosity, but readings above the shaded area show the
normal operating range. Readings in the shaded area tell
you that the engine is low on oil, or that you might have
some other oil problem. See “Engine Oil” in the Index.
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Downloaded from www.Manualslib.com manuals search engine NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by your
warranty.
Engine Oil Temperature Gauge
LT1 LT5
This gauge shows your engine oil temperature. Oil
temperature may vary with the type
of driving you do
and weather conditions. If your gauge pointer moves
close to or into the shaded area and stays there, your oil
temperature is too high. Check the engine coolant
temperature and engine oil level. If your engine is too
hot, see “Engine Overheating” in the Index. Your
vehicle may need service; see your dealer.
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Downloaded from www.Manualslib.com manuals search engine I 1=1 1 I -1 I
r .
For numeric gauge measurements, press the GAUGES
button on the Trip Monitor until OIL appears. The
number that appears next to the fuel gauge is the oil
temperature.
If LO appears, the temperature is below
32°F (OOC).
System Problems
If SYS flashes on the display near your fuel gauge,
there may be a problem with your Corvette’s electrical
system. If the amber SECURITY light flashes at the
same time, there
is a problem with your theft-deterrent
system. Have your vehicle checked by your dealer
if
SYS keeps appearing.
Gauge Markings
The analog gauges provide a quick visual reference to
the actual measurements of these gauges. However, you
must keep in mind that the gauges aren’t linear. This
means that the middle mark is not a temperature halfway
between the top and bottom temperatures on the gauge.
For your convenience, the following table gives the
exact reading for each mark.

Downloaded from www.Manualslib.com manuals search engine Fuel Gauge
For numeric gauge measurements, refer to the digital
readings by pressing GAUGES on the
Trip Monitor.
Marking
Gauge
E D C B A
LT1 Oil 100
260
235
210
185 100 Coolant
280 250
220
190
100 LT5 Oil
320 285
250
21 5 Temperature
Temperature
Temperature
CF
Your fuel gauge shows about how much fuel is in your
tank. The bars light up when the ignition is on or, if the
ignition is off, when
you turn on your parking lamps.
When the display
is down to the last two bars,
RESERVE will appear next to the gauge.
Here
are three concerns some owners have had about the
fuel gauge. All these situations
are normal and do not
indicate that anything is wrong with the fuel gauge.
At the gas station, the fuel pump shuts off before the
gauge reads
FULL (F).
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Downloaded from www.Manualslib.com manuals search engine It’s normal for the transmission fluid temperature to
vary, depending on the type of driving you do and
weather conditions. If you drive on long grades on a hot
day, the transmission fluid temperature will be higher
than normal driving on a cold day. If you drive your
Corvette at high speeds with a lot of stop-and-go or fast
accelerations, your transmission fluid temperature may
also be higher.
If the transmission fluid exceeds
280°F (138 “C), the
CHECK GAUGES light will come on and HI
AUTO
will be displayed next to the transmission fluid
temperature when you toggle through the GAUGES
button. You should move the shift lever to DRIVE (D)
and continue driving at a slower, constant speed.
Monitor the transmission fluid temperature and allow
it
to cool to 180°F (82°C) to 200°F (93°C). Then, you
should check the transmission fluid level for a low fill or
overfill condition and bring your Corvette in for service
as soon as possible (see “Automatic Transmission Fluid”
in the Index). Also, check the engine coolant
temperature. If it’s too hot, see “Cooling System” in the
Index.
Check Gauges Light
This red light will come on
briefly when you are
starting the engine. If the
light comes on and stays on
while
you are driving, check
your gauges to see if they
are
in the warning areas.
This light can come
on for:
0 high engine oil temperature or low oil pressure
high coolant temperature
high or low battery voltage
0 low fuel level
0 high automatic transmission oil temperature
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Downloaded from www.Manualslib.com manuals search engine Low Oil Light
LOW
OIL
T
This amber light should
come on while you are
starting your engine.
If the
light doesn’t come on, have
it repaired.
If the light
comes on while starting
your engine and stays on,
your engine oil level may be
too low. You may need to
add oil. See “Engine Oil” in
the Index.
Engine Oil Life Monitor
The amber CHANGE OIL
light comes on for a few
seconds when you turn the
ignition
on. It will come on
and stay on when it’s time
to change your oil.
The monitor uses oil temperature and engine revolutions
to decide when the oil is nearly worn out. The light is
only a reminder, though.
You should change your oil at
the intervals recommended in your Maintenance
Schedule, even if the
CHANGE OIL light hasn’t come
on.
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Downloaded from www.Manualslib.com manuals search engine RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE OIL FOR THE EXPECTED TEMPERATURE MNGE.
HOT
WEATHER
LOOK
FOR THIS
SYMBOL
-- 1-J SAE 1OW-30
SAE 5W-30 PREFERRED
COLD
WEATHER
DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT RECOMMENDED
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 (-1S.OC) or above.
These numbers on an
oil container show its viscosity,
or thickness.
Do not use other viscosity oils such as
SAE
20W-50.
Oils meeting these
requirements should also
have the “Starburst” symbol
on the container.
The “Starburst” symbol indicates that the
oil has been
certified by the American Petroleum Institute (API), and
is preferred for your gasoline engine. These oils may
also be identified
as API SH.
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Downloaded from www.Manualslib.com manuals search engine You should look for this on the oil container, and use
only those oils that are identified as meeting GM
Standard
4718M and have the “Starburst” symbol on the
front of the oil container.
Your Corvette engine is filled at the factory with a
Mobil
1 @ synthetic oil, which meets all requirements for
your vehicle.
Substitute Oil (LTl Only): When adding oil to
maintain engine oil level, oil meeting GM Standard
GM47
18M may not be available. You can add substitute
oil designated
SAE 5W-30 with the “Starburst” symbol
or API Service SH at all temperatures. If temperatures
are above
0” F (- 18 O C), you may substitute SAE
1OW-30 with the “Starburst” symbol or API Service
SH
oil. This oil should not be used for an oil change.
Substitute Oil (LT5 Only): When adding oil to
maintain engine oil level,
if an oil meeting GM Standard
GM47
18M is not available, you can use oil designated
SAE 1OW-30 with the “Starburst” symbol or API
~ Service SH at all temperatures. This oil should not be
used for
an oil change.
Engine Oil Additives
Don’t add anything to your oil. Your Chevrolet dealer is
ready to advise if you think something should be added.
When to Change Engine Oil
See if any one of these is true for you:
0 Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop and
go traffic).
Most trips are through dusty areas.
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 “Engine Oil
Life Monitor” in the Index.)
If none of them is true, change the oil and filter every
7,500 miles (12 500 km) or 12 months -- whichever
comes first. (See “Engine Oil Life Monitor” in the
Index.)
Engine Coolant Heater
An engine coolant heater can be a big help if you have
to
park outside in very cold weather, 0” F (- 1 8 O C) or
colder. If your vehicle has this feature, see “Engine
Coolant Heater” in the Index.
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Downloaded from www.Manualslib.com manuals search engine What to Use What to Use
To add lubricant when the level is low, use Axle
Lubricant (GM Part
No. 12345977) or SAE SOW-90
GL-5 gear lubricant.
To completely refill after draining,
add
4 ounces (1 18 ml) of Limited-Slip Differential
Lubricant Additive (GM Part
No. 1052358). Then fill to
the bottom of the filler plug hole with Axle Lubricant
(GM Part
No. 12345977) or SAE 8OW-90 GL-5 gear
lubricant.
Engine Coolant
The following explains your cooling system and how to
add coolant when it is low.
If you have a problem with
engine overheating or if you need to add coolant to your
high fill reservoir, see “Engine Overheating” in the
Index.
The proper coolant for your Corvette will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 262 “F (128 ” C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights work as they should. Use a mixture
of one-half
clean water (preferably
distilled) and one-half antifreeze that meets
“GM
Specification 1825M,” which won’t damage aluminum
parts.
You can also use a recycled coolant conforming to
GM Specification 1825M with a complete coolant flush
and refill. Use GM Engine Coolant Supplement (sealer)
with any complete coolant flush and refill. If
you use
this mixture, you don’t need to add anything else.
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