1994 Oldsmobile Cutlass Supreme radiator cap

160
Cooling System
When you decide it’s safe to lift the
hood, here’s what you’ll see:
(A) Coolant recovery tank
(€3) Radiator pressure cap
(C) Electric engine fans If
the coolant inside the coolant
recovery tank
is boiling, don’t do
anything else until it cools down.
The coolant level should be at or above
the
COLD mark. 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.

Problems on the Road
' 164
4. Fill the radiatot with the praper mix,
.up to the base of the filler neck. If
you see a stream af coolant coming
from. an air bleed valve, close the
valve. Otherwise.,
close. the valves
&er the radiator is filled.
5. Rinse or wip*e any spilled coolant
from the engine compartment,
6. Then fill the coolant recovery tank to
the
COLD mark.
7. Put the cap back on the coolant
recovery tank, but. leave the radiator
pressure cap
off.

8. Start the engine and let it run until
you can feel the upper radiator hose
getting hot. Watch out for the engine
fans.
9. By this time the coolant level inside
the radiator filler neck may be lower.
If the level is lower, add more of the
proper mix through the filler neck
until the level reaches the base of the
filler neck.
10. Then replace the pressure cap. At
any time during this procedure if
coolant begins to flow out of the
filler neck, reinstall the pressure
cap. Be sure the arrows on the
pressure cap.line up like this.
11. Check the coolant in the recovery
tank. The level in the coolant
recovery tanlc should be at the
HOT
mark when the engine is hot or at
the
COLD mark when the engine is
cold.
Ifa Tire Goes Flat
It’s unusual for a tire to “blow out”
while you’re driving, especially
if you
maintain your tires properly. If air goes
out of a tire, it’s much more likely to
leak out slowly. But if you should ever
have
a “blowout,” here are a few tips
about what to expect and what to
do:
If a front tire fails, the flat tire will
create a drag that pulls the vehicle
toward that side. Take your foot off the
accelerator pedal and grip the steering
wheel firmly. Steer to maintain lane
position, then gently brake to a stop
well out of the traffic lane.
A rear blowout, particularly on a curve,
acts much like a slid and may require
the same correction you’d use
in a skid.
In any rear blowout, remove your foot
from the accelerator pedal. Get the
vehicle under control by steering the
way you want the vehicle to go. It may
be very bumpy and noisy, but you can
still steer. Gently brake to a stop, well
off the road if possible.
If a tire goes flat, the next section shows
how to use your jacking equipment to
change a flat tire safely.
165

Service & Appearanctr Care
3700 V6 Engine (CODE M).
When you open the hood, you’ll see:
1. Power Steering Fluid Reservoir
2. Engine Oil Fill Cap
3. Automatic Transaxle Fluid Dipstick
4. Brake Fluid Reservoir
5. Windshield Washer Fluid Reservoir
6. Battery
7. Air Cleaner
8. Engine Oil Dipstick
9. Radiator Pressure Cap
IO. Engine Coolant Reservoir

Twin Dual Cam (DOHC) 3.4L V6
Engine (CODE x)
When you open the hood, you’ll see:
1. Power Steering Fluid Reservoir
2. Automatic Transaxle Fluid Dipstick
3. Brake Fluid Reservoir
4. Windshield Washer Fluid Reservoir
5. Battery
6. Air Cleaner
7. Engine Oil Fill Cap
8. Engine Oil Dipstick
9. Radiator Pressure Cap
IO. Engine Coolant Reservoir
183

Service & Appearance Care
Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi
(105kPa) pressure-type cap and
must be tightly. installed
io prevent
coolant loss and possible engine
damage from overheating. Be sure
the arrows on the cap line up with
192
Add coolant mix at the recovery tank,
but be careful not to spill it.
L I
the overflow tube on the radiator
filler neck.
I Power Steering Fluid
How To Check Power Steering
When you replace your radiator premre
cap, an
AC@ cap is recommended.
Thermostat
Engine coolant temperature is
controlled by a thermostat in the engine
coolant system. The thermostat stops
the flow of coolant through the radiator
until the coolant reaches a preset
temperature.
When you replace your thermostat, an
AC@ thermostat is recommended.
Fluid
-
Unscrew the cap and wipe the dipstick
with a clean rag. Replace the cap and
completely tighten it. Then remove the
cap again and look at the fluid level on
the dipstick.
When the engine compartment is hot,
the level should be at the
H mark.
When the engine compartment is
cool, the level 'should be at the
C
mark.
What to Add
Refer to the Maintenance Schedule to
determine what kind of fluid to use. See

Recommended Fluids and Lubricants
in the Index.
NOTICE:
When adding power steering fluid
or making a complete fluid change,
always use the proper fluid. Failure
to use the proper fluid can cause
leaks and damage hoses and seals.
Windshield Washer Fluid
To Add
Open the cap labeled WASHER
FLUID ONLY. Add washer fluid until
the bottle is full.
NOTICE:
When using concentrated washer
fluid, follow the manufacturer’s
instructions for adding water.
Don’t mix water with ready-to-
use washer fluid. Water can cause
the solution
to freeze and damage
your washer fluid tank and other
parts of the washer system. Also,
water doesn’t clean as well as
washer fluid.
. Fill your washer fluid tank only %
full when it’s very cold. This
allows for expansion, which could
damage the tank if it is
completely full.
Don’t use radiator antifreeze in
your windshield washer. It can
damage your washer system and
paint.
193

Maintenance Schedule
242 ~
Explanation of~scheduled
Mainfenance Services
Following are explanations of the
services listed in Schedule I and
Schedule
11.
The proper fluids and lubricants to use
are listed in Section D. Make sure
whoever services your vehicle
uses
these. All parts should be-replaced and
all necessary repairs done before you or
anyone else drives the vehicle.
ITEM SERVICE
NO.
1. Engine Oil and Filter Change* -
Always use SH or SG Energy
Conserving I1 oils of proper viscosity.
The “SH” or “SG” designation may
be shown alone or in combination
with others, such as “SH/CD,” “SH,
SG, CD,”“SG/CD,” etc. To
determine the preferred viscosity for
your vehicle’s engine (e.g., SAE 5W-
30 or SAE 10W-30), see
Engine Oil
in the Index.
2. Chassis Lubrication - Lubricate
suspension and steering linkage.
Lubricate the transaxle shift linkage,
and parking brake cable guides,
underbody contact points and
linkage.
3. Tire and Wheel Rotation and
Inspection
- For proper wear and
maximum tire life, rotate your tires
following the instructions in this
manual. See
Tires, Inspection 6
Rotation in the hdex. Check the
tires for uneven wear or damage.
If
you see irregular or premature wear,
check the wheel alignment. Check for
damaged wheels also.
Inspection *‘ - Inspect the belt for
cracks, fraying, wear and proper
tension. Replace as needed.
5. Camshaft Timing Belt Inspection
(3.4L Code X engine only) * -
Inspect for cracks, wear or oiliness.
Check tensioner for proper operation.
See the service manual.
(To purchase
4. Engine Accessory Drive Belt
a service manual, see Service
Publications
in the Index.) Replace
parts as needed.
6. Cooling System Service* - Drain,
flush and refill the system with new
or approved recycled. coolant
conforming
to GM Specification
1825M. Keep coolant at the proper
mixture as specified. See
Coolant in
the
Index. This provides proper
freeze and boil protection, corrosion
inhibitor level and maintains proper
engine operating temperature.
Inspect hoses and replace
if they are
cracked, swollen or deteriorated.
Clean the outside of the radiator and
air conditioning condenser. Wash the
pressure cap and neck.
To help ensure proper operation, we
recommend a pressure test of both
the cooling system and the pressure
cap.
7. Transaxle Service - Change both
the fluid and filter .every
15,000 miles
(25
000 lm) if the vehicle is mainly