engine OLDSMOBILE SILHOUETTE 1993 Repair Manual

Service & Appearance Care
218
Gasolines for Cleaner Air
Your use of gasoline with detergent
additives will help prevent deposits from
forming in your engine and fuel system.
That helps keep your engine in tune and
your emission control system working properly. It’s good for your vehicle, and
you’ll be doing your part for cleaner air.
Many gasolines are now blended with
materials called oxygenates. General
Motors recommends that you use
gasolines with these blending materials,
such as MTBE and ethanol. By doing
so, you can help clean the air, especially
in those parts of the country that have
high carbon monoxide levels.
In addition, some gasoline suppliers are
now producing reformulated gasolines.
These gasolines are specially designed
to reduce vehicle emissions. General Motors recommends that you use
reformulated gasoline. By doing
so, you
can help clean the air, especially in
those parts of the country that have high
ozone levels.
You should ask your service station
operators
if their gasolines contain
detergents and oxygenates, and
if they
have been reformulated to reduce
vehicle emissions.
”z
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.
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Hood Release
To open the hood, first pull the hood
release handle inside the vehicle. Then go to the front
of the vehicle and
pull up
on the underhood release.
Lift the hood. The
hood prop rod
may be hot due to
increased engine temperatures under the
hood,
so be careful when handling it.
Use your hood prop sleeve when
handling the prop.
Pull forward on the hood prop to release
it from its storage
clip. Then put the end
of the hood prop into the slot in the
underside
of the hood.
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Service & Appearance Care
1 Hood Release (CONT.) I
I. CAUT'aN
An electric fan under the hood
can
start up and injure you
even when the engine is not
running. Keep hands, clothing and
tools away from any underhood
electric fan.
Things that burn can get on
hot engine parts and start a
~e. These include liquids like
gasoline, oil, coolant, brake fluid,
windshield washer and other
fluids, and plastic or rubber. You
or others could be burned. Be
cmh1 nut to drop or spill things
that wiU burn onto a hot engine.
Before closing the hood, be sure all the
filler caps are
on properly. Then lift the
hood
to relieve pressure on the hood
prop. Remove the hood prop from the
slot
in the hood and return the prop to
its retainer. Then just let the hood down
and close
it firmly.
*** I -- I
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P P
3,lL V6 Engine (CODE D)
1. Engine Coolant Reservoir
2. Power Steering Fluid Reservoir
3. Air Cleaner
4. Brake Fluid Reservoir
5. Windshield Washer Fluid Reservoir
6. Battery
7. Automatic Transaxle Fluid Dipstick
8. Engine Oil Dipstick
9. Engine Oil Fill Can
1 0. Radiator Cap
@ U6084
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Service & Appearance Cure
224
P P
3800 V6 Engine (CODE L)
1 . Engine Coolant Reservoir
2. Power Steering Fluid Reservoir
3. Automatic Transaxle Fluid Dipstick
4. Brake Fluid Reservoir
5. Windshield Washer Fluid Reservoir
6. Battery
7. Air Cleaner
8. Engine Oil Dipstick
9. Engine Oil Fill Cap
10. Radiator Cap
(3 U6085
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Underhood Light
Your underhood light will go on when
you open the hood.
Engine Oil
It’s a good idea to check your engine oil
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.
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.
I 3.1L V6: Checking Engine Oil
3800 V6: Checking Engine Oil
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Service & Appearance Care
226
Engine Oil (CONT:)
When to Add Oil:
If the oil is at or below the ADD mark,
then you’ll need to add some oil. But
you must use the right kind. This
section explains what kind
of oil to use.
For crankcase capacity, see the
Index
under Capacities & Specljications.
UOTIC
I 3.1L V6: Adding Engine Oil
engine has so much oil that the oi
level gets above the crosshatched
area that
shows the proper
operating range,
your engine could
I
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.
3800 V6: Adding Engine Oil
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SG
“SG” must be on the oil container,
either by itself or combined with other
quality designations, such as
“SGICC,” “SGICD,” “SF, SG, CC,”
etc. These letters show American
Petroleum Institute
(API) levels of
quality.
If you use oils that don’t have the
SG designation? you can cause
engine damage not covered by your
warranty.
Grade E
For best fuel economy and cold starting,
select the lowest SAE viscosity grade oil
for the expected temperature range.
SAE 5W-30 (3.X V6 Engine)
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 1OW-40 or SAE 20W-50.
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Service & Appearance Care
necommenueu ~AC vlsr;osny
Grade Engine Oils
228
What Kind of Oil to Use (CONI)
SAE 1OW-30 (3800 V6 Engine)
As shown in the viscosity chart, SAE
1OW-30 is best for your vehicle.
However, you can use
SAE 5W-30 if
it's going to be colder than
60°F
(16°C) before your next oil change.
When it's very cold, below
0°F
(-18" C), you should use SAE 5W-30.
These numbers on an oil container
show its viscosity, or thickness.
Do
not use other viscosity oils such as
SAE 1OW-40 or SAE 20W-50.
For best fuel economy and cold starting,
select the
lowest SAE viscosity grade oil
for the expected temperature range. I
HOT
YEATHER
COLD
N EATHER
. _._
SAE 5W-30
GRADE OILS ARE AVAILABLE, S
GRADE MAY BE USED AT TEMP
ABOVE
40 DEGREES F (4 DEGREE
DO NOT
USE SAE 1OW-40, SAE 20W-
Energy Conserving II
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.
GM Goodwrench@ Oil
(in Canada, GM
Engine
Oil) meets all the requirements
for your vehicle.
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Engine Oil Additives
Don't add anything to your oil. Your
Oldsmobile 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:
Most trips are less than 4 miles (6 km).
It's below freezing outside and most
trips are less than
10 miles (16 km).
The engine is at low speed most of the
time (as in door-to-door delivery, or in
stop-and-go traffic).
You tow a trailer often.
Most trips are through dusty places.
If any one of these is true for your
vehicle, then
you need to change your
oil and filter every 3,000 miles
(5 000 km) or 3 months-whichever
comes first.
If none of them is true, change the oil
every 7,500 miles (12 500 km) or 12
months-whichever comes first. Change
the filter at the first oil change and at
every other oil change after that.
Engine Block Heater (omoN)
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 this option, see the
Index under Engine Block Heater.
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